Home / 31,076,721.88-42,894,147.18-18,357,574.12

Finding the Fourth Proportional to 31,076,721.88, 42,894,147.18 and 18,357,574.12

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Solution

The fourth proportional to 31,076,721.88, 42,894,147.18 and 18,357,574.12 is: 25,338,338.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,076,721.88 : 42,894,147.18 = 18,357,574.12 : x
  2. Step 2: Convert to fraction form
    31,076,721.88/42,894,147.18 = 18,357,574.12/x
  3. Step 3: Cross multiply
    31,076,721.88x = 42,894,147.18 × 18,357,574.12
  4. Step 4: Simplify right side
    31,076,721.88x = 787,432,486,171,039
  5. Step 5: Solve for x
    x = 787,432,486,171,039/31,076,721.88
  6. Step 6: Final answer
    x = 25,338,338.10

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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.