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Finding the Fourth Proportional to 93,951.78, 129,654.72 and 51,510.21

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Solution

The fourth proportional to 93,951.78, 129,654.72 and 51,510.21 is: 71,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,951.78 : 129,654.72 = 51,510.21 : x
  2. Step 2: Convert to fraction form
    93,951.78/129,654.72 = 51,510.21/x
  3. Step 3: Cross multiply
    93,951.78x = 129,654.72 × 51,510.21
  4. Step 4: Simplify right side
    93,951.78x = 6,678,541,854.69
  5. Step 5: Solve for x
    x = 6,678,541,854.69/93,951.78
  6. Step 6: Final answer
    x = 71,084.78

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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.