Home / 66,134.50-91,265.82-39,278.14

Finding the Fourth Proportional to 66,134.50, 91,265.82 and 39,278.14

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Solution

The fourth proportional to 66,134.50, 91,265.82 and 39,278.14 is: 54,203.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,134.50 : 91,265.82 = 39,278.14 : x
  2. Step 2: Convert to fraction form
    66,134.50/91,265.82 = 39,278.14/x
  3. Step 3: Cross multiply
    66,134.50x = 91,265.82 × 39,278.14
  4. Step 4: Simplify right side
    66,134.50x = 3,584,751,655.17
  5. Step 5: Solve for x
    x = 3,584,751,655.17/66,134.50
  6. Step 6: Final answer
    x = 54,203.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.