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Finding the Fourth Proportional to 71,327.20, 106,990.80 and 59,663.20

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Solution

The fourth proportional to 71,327.20, 106,990.80 and 59,663.20 is: 89,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,327.20 : 106,990.80 = 59,663.20 : x
  2. Step 2: Convert to fraction form
    71,327.20/106,990.80 = 59,663.20/x
  3. Step 3: Cross multiply
    71,327.20x = 106,990.80 × 59,663.20
  4. Step 4: Simplify right side
    71,327.20x = 6,383,413,498.56
  5. Step 5: Solve for x
    x = 6,383,413,498.56/71,327.20
  6. Step 6: Final answer
    x = 89,494.80

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1.5x scale

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.