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Finding the Fourth Proportional to 40,139.25, 60,208.87 and 16,749.28

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Solution

The fourth proportional to 40,139.25, 60,208.87 and 16,749.28 is: 25,123.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,139.25 : 60,208.87 = 16,749.28 : x
  2. Step 2: Convert to fraction form
    40,139.25/60,208.87 = 16,749.28/x
  3. Step 3: Cross multiply
    40,139.25x = 60,208.87 × 16,749.28
  4. Step 4: Simplify right side
    40,139.25x = 1,008,455,286.91
  5. Step 5: Solve for x
    x = 1,008,455,286.91/40,139.25
  6. Step 6: Final answer
    x = 25,123.92

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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.