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Finding the Fourth Proportional to 83,538.88, 115,273.04 and 47,731.21

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Solution

The fourth proportional to 83,538.88, 115,273.04 and 47,731.21 is: 65,863.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,538.88 : 115,273.04 = 47,731.21 : x
  2. Step 2: Convert to fraction form
    83,538.88/115,273.04 = 47,731.21/x
  3. Step 3: Cross multiply
    83,538.88x = 115,273.04 × 47,731.21
  4. Step 4: Simplify right side
    83,538.88x = 5,502,121,585.01
  5. Step 5: Solve for x
    x = 5,502,121,585.01/83,538.88
  6. Step 6: Final answer
    x = 65,863.00

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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.