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Finding the Fourth Proportional to 73,087.60, 100,861.20 and 39,553.60

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Solution

The fourth proportional to 73,087.60, 100,861.20 and 39,553.60 is: 54,584.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,087.60 : 100,861.20 = 39,553.60 : x
  2. Step 2: Convert to fraction form
    73,087.60/100,861.20 = 39,553.60/x
  3. Step 3: Cross multiply
    73,087.60x = 100,861.20 × 39,553.60
  4. Step 4: Simplify right side
    73,087.60x = 3,989,423,560.32
  5. Step 5: Solve for x
    x = 3,989,423,560.32/73,087.60
  6. Step 6: Final answer
    x = 54,584.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.