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Finding the Fourth Proportional to 47,859.52, 71,920.44 and 45,142.16

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Solution

The fourth proportional to 47,859.52, 71,920.44 and 45,142.16 is: 67,836.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,859.52 : 71,920.44 = 45,142.16 : x
  2. Step 2: Convert to fraction form
    47,859.52/71,920.44 = 45,142.16/x
  3. Step 3: Cross multiply
    47,859.52x = 71,920.44 × 45,142.16
  4. Step 4: Simplify right side
    47,859.52x = 3,246,644,009.75
  5. Step 5: Solve for x
    x = 3,246,644,009.75/47,859.52
  6. Step 6: Final answer
    x = 67,836.95

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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.