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Finding the Fourth Proportional to 84,754.52, 127,128.69 and 25,588.64

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Solution

The fourth proportional to 84,754.52, 127,128.69 and 25,588.64 is: 38,382.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,754.52 : 127,128.69 = 25,588.64 : x
  2. Step 2: Convert to fraction form
    84,754.52/127,128.69 = 25,588.64/x
  3. Step 3: Cross multiply
    84,754.52x = 127,128.69 × 25,588.64
  4. Step 4: Simplify right side
    84,754.52x = 3,253,049,646.44
  5. Step 5: Solve for x
    x = 3,253,049,646.44/84,754.52
  6. Step 6: Final answer
    x = 38,382.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.