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Finding the Fourth Proportional to 93,404.55, 128,747.71 and 63,178.85

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Solution

The fourth proportional to 93,404.55, 128,747.71 and 63,178.85 is: 87,084.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,404.55 : 128,747.71 = 63,178.85 : x
  2. Step 2: Convert to fraction form
    93,404.55/128,747.71 = 63,178.85/x
  3. Step 3: Cross multiply
    93,404.55x = 128,747.71 × 63,178.85
  4. Step 4: Simplify right side
    93,404.55x = 8,134,132,257.93
  5. Step 5: Solve for x
    x = 8,134,132,257.93/93,404.55
  6. Step 6: Final answer
    x = 87,084.97

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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.