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Finding the Fourth Proportional to 72,500.60, 108,546.10 and 70,452.60

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Solution

The fourth proportional to 72,500.60, 108,546.10 and 70,452.60 is: 105,479.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,500.60 : 108,546.10 = 70,452.60 : x
  2. Step 2: Convert to fraction form
    72,500.60/108,546.10 = 70,452.60/x
  3. Step 3: Cross multiply
    72,500.60x = 108,546.10 × 70,452.60
  4. Step 4: Simplify right side
    72,500.60x = 7,647,354,964.86
  5. Step 5: Solve for x
    x = 7,647,354,964.86/72,500.60
  6. Step 6: Final answer
    x = 105,479.89

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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.