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Finding the Fourth Proportional to 40,505.70, 60,758.02 and 13,851.42

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Solution

The fourth proportional to 40,505.70, 60,758.02 and 13,851.42 is: 20,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,505.70 : 60,758.02 = 13,851.42 : x
  2. Step 2: Convert to fraction form
    40,505.70/60,758.02 = 13,851.42/x
  3. Step 3: Cross multiply
    40,505.70x = 60,758.02 × 13,851.42
  4. Step 4: Simplify right side
    40,505.70x = 841,584,853.39
  5. Step 5: Solve for x
    x = 841,584,853.39/40,505.70
  6. Step 6: Final answer
    x = 20,776.95

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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.