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Finding the Fourth Proportional to 40,830.60, 61,245.90 and 34,269.60

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Solution

The fourth proportional to 40,830.60, 61,245.90 and 34,269.60 is: 51,404.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,830.60 : 61,245.90 = 34,269.60 : x
  2. Step 2: Convert to fraction form
    40,830.60/61,245.90 = 34,269.60/x
  3. Step 3: Cross multiply
    40,830.60x = 61,245.90 × 34,269.60
  4. Step 4: Simplify right side
    40,830.60x = 2,098,872,494.64
  5. Step 5: Solve for x
    x = 2,098,872,494.64/40,830.60
  6. Step 6: Final answer
    x = 51,404.40

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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.