Home / 66,617.97-91,932.45-39,403.80

Finding the Fourth Proportional to 66,617.97, 91,932.45 and 39,403.80

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Solution

The fourth proportional to 66,617.97, 91,932.45 and 39,403.80 is: 54,377.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,617.97 : 91,932.45 = 39,403.80 : x
  2. Step 2: Convert to fraction form
    66,617.97/91,932.45 = 39,403.80/x
  3. Step 3: Cross multiply
    66,617.97x = 91,932.45 × 39,403.80
  4. Step 4: Simplify right side
    66,617.97x = 3,622,487,873.31
  5. Step 5: Solve for x
    x = 3,622,487,873.31/66,617.97
  6. Step 6: Final answer
    x = 54,377.04

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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.