Home / 30,980,911,685.78-42,752,395,280.54-18,297,753,356.18

Finding the Fourth Proportional to 30,980,911,685.78, 42,752,395,280.54 and 18,297,753,356.18

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Solution

The fourth proportional to 30,980,911,685.78, 42,752,395,280.54 and 18,297,753,356.18 is: 25,250,153,777.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,980,911,685.78 : 42,752,395,280.54 = 18,297,753,356.18 : x
  2. Step 2: Convert to fraction form
    30,980,911,685.78/42,752,395,280.54 = 18,297,753,356.18/x
  3. Step 3: Cross multiply
    30,980,911,685.78x = 42,752,395,280.54 × 18,297,753,356.18
  4. Step 4: Simplify right side
    30,980,911,685.78x = 782,272,784,229,393,367,040
  5. Step 5: Solve for x
    x = 782,272,784,229,393,367,040/30,980,911,685.78
  6. Step 6: Final answer
    x = 25,250,153,777.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.