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Finding the Fourth Proportional to 55,472.61, 76,552.20 and 29,978.88

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Solution

The fourth proportional to 55,472.61, 76,552.20 and 29,978.88 is: 41,370.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,472.61 : 76,552.20 = 29,978.88 : x
  2. Step 2: Convert to fraction form
    55,472.61/76,552.20 = 29,978.88/x
  3. Step 3: Cross multiply
    55,472.61x = 76,552.20 × 29,978.88
  4. Step 4: Simplify right side
    55,472.61x = 2,294,949,217.54
  5. Step 5: Solve for x
    x = 2,294,949,217.54/55,472.61
  6. Step 6: Final answer
    x = 41,370.85

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1.5x scale

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.