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Finding the Fourth Proportional to 71,129.66, 98,150.57 and 39,296.66

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Solution

The fourth proportional to 71,129.66, 98,150.57 and 39,296.66 is: 54,224.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,129.66 : 98,150.57 = 39,296.66 : x
  2. Step 2: Convert to fraction form
    71,129.66/98,150.57 = 39,296.66/x
  3. Step 3: Cross multiply
    71,129.66x = 98,150.57 × 39,296.66
  4. Step 4: Simplify right side
    71,129.66x = 3,856,989,381.61
  5. Step 5: Solve for x
    x = 3,856,989,381.61/71,129.66
  6. Step 6: Final answer
    x = 54,224.77

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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.