Home / 81,531.26-112,382.97-64,275.49

Finding the Fourth Proportional to 81,531.26, 112,382.97 and 64,275.49

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Solution

The fourth proportional to 81,531.26, 112,382.97 and 64,275.49 is: 88,597.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,531.26 : 112,382.97 = 64,275.49 : x
  2. Step 2: Convert to fraction form
    81,531.26/112,382.97 = 64,275.49/x
  3. Step 3: Cross multiply
    81,531.26x = 112,382.97 × 64,275.49
  4. Step 4: Simplify right side
    81,531.26x = 7,223,469,902.49
  5. Step 5: Solve for x
    x = 7,223,469,902.49/81,531.26
  6. Step 6: Final answer
    x = 88,597.56

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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.