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Finding the Fourth Proportional to 71,125.70, 98,152.76 and 39,293.91

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Solution

The fourth proportional to 71,125.70, 98,152.76 and 39,293.91 is: 54,225.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,125.70 : 98,152.76 = 39,293.91 : x
  2. Step 2: Convert to fraction form
    71,125.70/98,152.76 = 39,293.91/x
  3. Step 3: Cross multiply
    71,125.70x = 98,152.76 × 39,293.91
  4. Step 4: Simplify right side
    71,125.70x = 3,856,805,815.93
  5. Step 5: Solve for x
    x = 3,856,805,815.93/71,125.70
  6. Step 6: Final answer
    x = 54,225.21

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1.5x scale

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.