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Finding the Fourth Proportional to 66,425.80, 99,656.31 and 38,295.25

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Solution

The fourth proportional to 66,425.80, 99,656.31 and 38,295.25 is: 57,453.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,425.80 : 99,656.31 = 38,295.25 : x
  2. Step 2: Convert to fraction form
    66,425.80/99,656.31 = 38,295.25/x
  3. Step 3: Cross multiply
    66,425.80x = 99,656.31 × 38,295.25
  4. Step 4: Simplify right side
    66,425.80x = 3,816,363,305.53
  5. Step 5: Solve for x
    x = 3,816,363,305.53/66,425.80
  6. Step 6: Final answer
    x = 57,453.03

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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.