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Finding the Fourth Proportional to 71,883.52, 107,819.52 and 19,292.80

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Solution

The fourth proportional to 71,883.52, 107,819.52 and 19,292.80 is: 28,937.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,883.52 : 107,819.52 = 19,292.80 : x
  2. Step 2: Convert to fraction form
    71,883.52/107,819.52 = 19,292.80/x
  3. Step 3: Cross multiply
    71,883.52x = 107,819.52 × 19,292.80
  4. Step 4: Simplify right side
    71,883.52x = 2,080,140,435.46
  5. Step 5: Solve for x
    x = 2,080,140,435.46/71,883.52
  6. Step 6: Final answer
    x = 28,937.65

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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.