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Finding the Fourth Proportional to 66,474.38, 99,727.96 and 19,727.22

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Solution

The fourth proportional to 66,474.38, 99,727.96 and 19,727.22 is: 29,595.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,474.38 : 99,727.96 = 19,727.22 : x
  2. Step 2: Convert to fraction form
    66,474.38/99,727.96 = 19,727.22/x
  3. Step 3: Cross multiply
    66,474.38x = 99,727.96 × 19,727.22
  4. Step 4: Simplify right side
    66,474.38x = 1,967,355,407.07
  5. Step 5: Solve for x
    x = 1,967,355,407.07/66,474.38
  6. Step 6: Final answer
    x = 29,595.69

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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.