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Finding the Fourth Proportional to 66,437.48, 99,675.48 and 19,691.48

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Solution

The fourth proportional to 66,437.48, 99,675.48 and 19,691.48 is: 29,542.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,437.48 : 99,675.48 = 19,691.48 : x
  2. Step 2: Convert to fraction form
    66,437.48/99,675.48 = 19,691.48/x
  3. Step 3: Cross multiply
    66,437.48x = 99,675.48 × 19,691.48
  4. Step 4: Simplify right side
    66,437.48x = 1,962,757,720.91
  5. Step 5: Solve for x
    x = 1,962,757,720.91/66,437.48
  6. Step 6: Final answer
    x = 29,542.93

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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.