Home / 66,264.12-91,414.35-39,391.38

Finding the Fourth Proportional to 66,264.12, 91,414.35 and 39,391.38

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Solution

The fourth proportional to 66,264.12, 91,414.35 and 39,391.38 is: 54,342.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,264.12 : 91,414.35 = 39,391.38 : x
  2. Step 2: Convert to fraction form
    66,264.12/91,414.35 = 39,391.38/x
  3. Step 3: Cross multiply
    66,264.12x = 91,414.35 × 39,391.38
  4. Step 4: Simplify right side
    66,264.12x = 3,600,937,398.30
  5. Step 5: Solve for x
    x = 3,600,937,398.30/66,264.12
  6. Step 6: Final answer
    x = 54,342.19

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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.