Home / 84,902.20-127,371.72-25,742.50

Finding the Fourth Proportional to 84,902.20, 127,371.72 and 25,742.50

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Solution

The fourth proportional to 84,902.20, 127,371.72 and 25,742.50 is: 38,619.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,902.20 : 127,371.72 = 25,742.50 : x
  2. Step 2: Convert to fraction form
    84,902.20/127,371.72 = 25,742.50/x
  3. Step 3: Cross multiply
    84,902.20x = 127,371.72 × 25,742.50
  4. Step 4: Simplify right side
    84,902.20x = 3,278,866,502.10
  5. Step 5: Solve for x
    x = 3,278,866,502.10/84,902.20
  6. Step 6: Final answer
    x = 38,619.33

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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.