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Finding the Fourth Proportional to 140,456.77, 210,691.31 and 40,627.05

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Solution

The fourth proportional to 140,456.77, 210,691.31 and 40,627.05 is: 60,942.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,456.77 : 210,691.31 = 40,627.05 : x
  2. Step 2: Convert to fraction form
    140,456.77/210,691.31 = 40,627.05/x
  3. Step 3: Cross multiply
    140,456.77x = 210,691.31 × 40,627.05
  4. Step 4: Simplify right side
    140,456.77x = 8,559,766,709.53
  5. Step 5: Solve for x
    x = 8,559,766,709.53/140,456.77
  6. Step 6: Final answer
    x = 60,942.36

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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.