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Finding the Fourth Proportional to 85,080.60, 127,616.24 and 25,911.31

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Solution

The fourth proportional to 85,080.60, 127,616.24 and 25,911.31 is: 38,865.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,080.60 : 127,616.24 = 25,911.31 : x
  2. Step 2: Convert to fraction form
    85,080.60/127,616.24 = 25,911.31/x
  3. Step 3: Cross multiply
    85,080.60x = 127,616.24 × 25,911.31
  4. Step 4: Simplify right side
    85,080.60x = 3,306,703,826.12
  5. Step 5: Solve for x
    x = 3,306,703,826.12/85,080.60
  6. Step 6: Final answer
    x = 38,865.55

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1.5x scale

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.