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Finding the Fourth Proportional to 66,471.89, 99,727.27 and 19,725.98

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Solution

The fourth proportional to 66,471.89, 99,727.27 and 19,725.98 is: 29,594.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,471.89 : 99,727.27 = 19,725.98 : x
  2. Step 2: Convert to fraction form
    66,471.89/99,727.27 = 19,725.98/x
  3. Step 3: Cross multiply
    66,471.89x = 99,727.27 × 19,725.98
  4. Step 4: Simplify right side
    66,471.89x = 1,967,217,585.52
  5. Step 5: Solve for x
    x = 1,967,217,585.52/66,471.89
  6. Step 6: Final answer
    x = 29,594.73

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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.