Home / 30,980,911,686.78-42,752,395,281.92-18,297,753,357.18

Finding the Fourth Proportional to 30,980,911,686.78, 42,752,395,281.92 and 18,297,753,357.18

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Solution

The fourth proportional to 30,980,911,686.78, 42,752,395,281.92 and 18,297,753,357.18 is: 25,250,153,778.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,980,911,686.78 : 42,752,395,281.92 = 18,297,753,357.18 : x
  2. Step 2: Convert to fraction form
    30,980,911,686.78/42,752,395,281.92 = 18,297,753,357.18/x
  3. Step 3: Cross multiply
    30,980,911,686.78x = 42,752,395,281.92 × 18,297,753,357.18
  4. Step 4: Simplify right side
    30,980,911,686.78x = 782,272,784,297,238,069,248
  5. Step 5: Solve for x
    x = 782,272,784,297,238,069,248/30,980,911,686.78
  6. Step 6: Final answer
    x = 25,250,153,778.76

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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.