Home / 85,077.28-127,634.15-25,917.72

Finding the Fourth Proportional to 85,077.28, 127,634.15 and 25,917.72

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Solution

The fourth proportional to 85,077.28, 127,634.15 and 25,917.72 is: 38,882.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,077.28 : 127,634.15 = 25,917.72 : x
  2. Step 2: Convert to fraction form
    85,077.28/127,634.15 = 25,917.72/x
  3. Step 3: Cross multiply
    85,077.28x = 127,634.15 × 25,917.72
  4. Step 4: Simplify right side
    85,077.28x = 3,307,986,162.14
  5. Step 5: Solve for x
    x = 3,307,986,162.14/85,077.28
  6. Step 6: Final answer
    x = 38,882.13

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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.