Home / 71,129.78-98,155.50-39,292.52

Finding the Fourth Proportional to 71,129.78, 98,155.50 and 39,292.52

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Solution

The fourth proportional to 71,129.78, 98,155.50 and 39,292.52 is: 54,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,129.78 : 98,155.50 = 39,292.52 : x
  2. Step 2: Convert to fraction form
    71,129.78/98,155.50 = 39,292.52/x
  3. Step 3: Cross multiply
    71,129.78x = 98,155.50 × 39,292.52
  4. Step 4: Simplify right side
    71,129.78x = 3,856,776,946.86
  5. Step 5: Solve for x
    x = 3,856,776,946.86/71,129.78
  6. Step 6: Final answer
    x = 54,221.69

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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.