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Finding the Fourth Proportional to 85,101.18, 127,651.77 and 38,367.42

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Solution

The fourth proportional to 85,101.18, 127,651.77 and 38,367.42 is: 57,551.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,101.18 : 127,651.77 = 38,367.42 : x
  2. Step 2: Convert to fraction form
    85,101.18/127,651.77 = 38,367.42/x
  3. Step 3: Cross multiply
    85,101.18x = 127,651.77 × 38,367.42
  4. Step 4: Simplify right side
    85,101.18x = 4,897,669,073.33
  5. Step 5: Solve for x
    x = 4,897,669,073.33/85,101.18
  6. Step 6: Final answer
    x = 57,551.13

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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.