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Finding the Fourth Proportional to 71,123.40, 98,148.88 and 39,292

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Solution

The fourth proportional to 71,123.40, 98,148.88 and 39,292 is: 54,222.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,123.40 : 98,148.88 = 39,292 : x
  2. Step 2: Convert to fraction form
    71,123.40/98,148.88 = 39,292/x
  3. Step 3: Cross multiply
    71,123.40x = 98,148.88 × 39,292
  4. Step 4: Simplify right side
    71,123.40x = 3,856,465,792.96
  5. Step 5: Solve for x
    x = 3,856,465,792.96/71,123.40
  6. Step 6: Final answer
    x = 54,222.18

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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.