Home / 71,428.26-98,565.67-39,157.71

Finding the Fourth Proportional to 71,428.26, 98,565.67 and 39,157.71

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Solution

The fourth proportional to 71,428.26, 98,565.67 and 39,157.71 is: 54,034.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,428.26 : 98,565.67 = 39,157.71 : x
  2. Step 2: Convert to fraction form
    71,428.26/98,565.67 = 39,157.71/x
  3. Step 3: Cross multiply
    71,428.26x = 98,565.67 × 39,157.71
  4. Step 4: Simplify right side
    71,428.26x = 3,859,605,921.82
  5. Step 5: Solve for x
    x = 3,859,605,921.82/71,428.26
  6. Step 6: Final answer
    x = 54,034.72

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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.