Home / 82,428,257.28-123,638,395.68-31,306,286.40

Finding the Fourth Proportional to 82,428,257.28, 123,638,395.68 and 31,306,286.40

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Solution

The fourth proportional to 82,428,257.28, 123,638,395.68 and 31,306,286.40 is: 46,957,914.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,428,257.28 : 123,638,395.68 = 31,306,286.40 : x
  2. Step 2: Convert to fraction form
    82,428,257.28/123,638,395.68 = 31,306,286.40/x
  3. Step 3: Cross multiply
    82,428,257.28x = 123,638,395.68 × 31,306,286.40
  4. Step 4: Simplify right side
    82,428,257.28x = 3,870,659,025,194,603
  5. Step 5: Solve for x
    x = 3,870,659,025,194,603/82,428,257.28
  6. Step 6: Final answer
    x = 46,957,914.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.