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Finding the Fourth Proportional to 143,881.86, 215,822.88 and 38,711.46

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Solution

The fourth proportional to 143,881.86, 215,822.88 and 38,711.46 is: 58,067.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,881.86 : 215,822.88 = 38,711.46 : x
  2. Step 2: Convert to fraction form
    143,881.86/215,822.88 = 38,711.46/x
  3. Step 3: Cross multiply
    143,881.86x = 215,822.88 × 38,711.46
  4. Step 4: Simplify right side
    143,881.86x = 8,354,818,786.20
  5. Step 5: Solve for x
    x = 8,354,818,786.20/143,881.86
  6. Step 6: Final answer
    x = 58,067.21

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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.