Home / 71,139.85-98,173.25-38,874.47

Finding the Fourth Proportional to 71,139.85, 98,173.25 and 38,874.47

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Solution

The fourth proportional to 71,139.85, 98,173.25 and 38,874.47 is: 53,646.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,139.85 : 98,173.25 = 38,874.47 : x
  2. Step 2: Convert to fraction form
    71,139.85/98,173.25 = 38,874.47/x
  3. Step 3: Cross multiply
    71,139.85x = 98,173.25 × 38,874.47
  4. Step 4: Simplify right side
    71,139.85x = 3,816,433,061.93
  5. Step 5: Solve for x
    x = 3,816,433,061.93/71,139.85
  6. Step 6: Final answer
    x = 53,646.91

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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.