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Finding the Fourth Proportional to 40,160.40, 60,247.80 and 16,789.20

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Solution

The fourth proportional to 40,160.40, 60,247.80 and 16,789.20 is: 25,186.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,160.40 : 60,247.80 = 16,789.20 : x
  2. Step 2: Convert to fraction form
    40,160.40/60,247.80 = 16,789.20/x
  3. Step 3: Cross multiply
    40,160.40x = 60,247.80 × 16,789.20
  4. Step 4: Simplify right side
    40,160.40x = 1,011,512,363.76
  5. Step 5: Solve for x
    x = 1,011,512,363.76/40,160.40
  6. Step 6: Final answer
    x = 25,186.81

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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.