Home / 85,078.60-127,613.23-25,909.31

Finding the Fourth Proportional to 85,078.60, 127,613.23 and 25,909.31

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Solution

The fourth proportional to 85,078.60, 127,613.23 and 25,909.31 is: 38,862.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,078.60 : 127,613.23 = 25,909.31 : x
  2. Step 2: Convert to fraction form
    85,078.60/127,613.23 = 25,909.31/x
  3. Step 3: Cross multiply
    85,078.60x = 127,613.23 × 25,909.31
  4. Step 4: Simplify right side
    85,078.60x = 3,306,370,736.17
  5. Step 5: Solve for x
    x = 3,306,370,736.17/85,078.60
  6. Step 6: Final answer
    x = 38,862.54

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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.