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Finding the Fourth Proportional to 85,080.38, 127,536.02 and 40,655.25

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Solution

The fourth proportional to 85,080.38, 127,536.02 and 40,655.25 is: 60,942.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,080.38 : 127,536.02 = 40,655.25 : x
  2. Step 2: Convert to fraction form
    85,080.38/127,536.02 = 40,655.25/x
  3. Step 3: Cross multiply
    85,080.38x = 127,536.02 × 40,655.25
  4. Step 4: Simplify right side
    85,080.38x = 5,185,008,726.29
  5. Step 5: Solve for x
    x = 5,185,008,726.29/85,080.38
  6. Step 6: Final answer
    x = 60,942.48

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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.