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Finding the Fourth Proportional to 91,376, 126,098.88 and 51,632

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Solution

The fourth proportional to 91,376, 126,098.88 and 51,632 is: 71,252.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,376 : 126,098.88 = 51,632 : x
  2. Step 2: Convert to fraction form
    91,376/126,098.88 = 51,632/x
  3. Step 3: Cross multiply
    91,376x = 126,098.88 × 51,632
  4. Step 4: Simplify right side
    91,376x = 6,510,737,372.16
  5. Step 5: Solve for x
    x = 6,510,737,372.16/91,376
  6. Step 6: Final answer
    x = 71,252.16

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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.