Home / 66,272.47-91,455.30-39,414.39

Finding the Fourth Proportional to 66,272.47, 91,455.30 and 39,414.39

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Solution

The fourth proportional to 66,272.47, 91,455.30 and 39,414.39 is: 54,391.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,272.47 : 91,455.30 = 39,414.39 : x
  2. Step 2: Convert to fraction form
    66,272.47/91,455.30 = 39,414.39/x
  3. Step 3: Cross multiply
    66,272.47x = 91,455.30 × 39,414.39
  4. Step 4: Simplify right side
    66,272.47x = 3,604,654,534.59
  5. Step 5: Solve for x
    x = 3,604,654,534.59/66,272.47
  6. Step 6: Final answer
    x = 54,391.43

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1.5x scale

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.