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Finding the Fourth Proportional to 63,432, 87,303.12 and 54,377.82

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Solution

The fourth proportional to 63,432, 87,303.12 and 54,377.82 is: 74,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,432 : 87,303.12 = 54,377.82 : x
  2. Step 2: Convert to fraction form
    63,432/87,303.12 = 54,377.82/x
  3. Step 3: Cross multiply
    63,432x = 87,303.12 × 54,377.82
  4. Step 4: Simplify right side
    63,432x = 4,747,353,344.80
  5. Step 5: Solve for x
    x = 4,747,353,344.80/63,432
  6. Step 6: Final answer
    x = 74,841.62

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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.