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Finding the Fourth Proportional to 84,471.88, 126,606.70 and 39,432.64

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Solution

The fourth proportional to 84,471.88, 126,606.70 and 39,432.64 is: 59,101.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,471.88 : 126,606.70 = 39,432.64 : x
  2. Step 2: Convert to fraction form
    84,471.88/126,606.70 = 39,432.64/x
  3. Step 3: Cross multiply
    84,471.88x = 126,606.70 × 39,432.64
  4. Step 4: Simplify right side
    84,471.88x = 4,992,436,422.69
  5. Step 5: Solve for x
    x = 4,992,436,422.69/84,471.88
  6. Step 6: Final answer
    x = 59,101.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.