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Finding the Fourth Proportional to 71,392.70, 107,158.77 and 59,621.78

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Solution

The fourth proportional to 71,392.70, 107,158.77 and 59,621.78 is: 89,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,392.70 : 107,158.77 = 59,621.78 : x
  2. Step 2: Convert to fraction form
    71,392.70/107,158.77 = 59,621.78/x
  3. Step 3: Cross multiply
    71,392.70x = 107,158.77 × 59,621.78
  4. Step 4: Simplify right side
    71,392.70x = 6,388,996,610.01
  5. Step 5: Solve for x
    x = 6,388,996,610.01/71,392.70
  6. Step 6: Final answer
    x = 89,490.89

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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.