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Finding the Fourth Proportional to 40,819.80, 61,229.70 and 40,560.60

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Solution

The fourth proportional to 40,819.80, 61,229.70 and 40,560.60 is: 60,840.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,819.80 : 61,229.70 = 40,560.60 : x
  2. Step 2: Convert to fraction form
    40,819.80/61,229.70 = 40,560.60/x
  3. Step 3: Cross multiply
    40,819.80x = 61,229.70 × 40,560.60
  4. Step 4: Simplify right side
    40,819.80x = 2,483,513,369.82
  5. Step 5: Solve for x
    x = 2,483,513,369.82/40,819.80
  6. Step 6: Final answer
    x = 60,840.90

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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.