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Finding the Fourth Proportional to 85,110.30, 127,686.15 and 25,947.09

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Solution

The fourth proportional to 85,110.30, 127,686.15 and 25,947.09 is: 38,926.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,110.30 : 127,686.15 = 25,947.09 : x
  2. Step 2: Convert to fraction form
    85,110.30/127,686.15 = 25,947.09/x
  3. Step 3: Cross multiply
    85,110.30x = 127,686.15 × 25,947.09
  4. Step 4: Simplify right side
    85,110.30x = 3,313,084,025.80
  5. Step 5: Solve for x
    x = 3,313,084,025.80/85,110.30
  6. Step 6: Final answer
    x = 38,926.95

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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.