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Finding the Fourth Proportional to 72,308.67, 108,446.60 and 25,561.55

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Solution

The fourth proportional to 72,308.67, 108,446.60 and 25,561.55 is: 38,336.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,308.67 : 108,446.60 = 25,561.55 : x
  2. Step 2: Convert to fraction form
    72,308.67/108,446.60 = 25,561.55/x
  3. Step 3: Cross multiply
    72,308.67x = 108,446.60 × 25,561.55
  4. Step 4: Simplify right side
    72,308.67x = 2,772,062,709.90
  5. Step 5: Solve for x
    x = 2,772,062,709.90/72,308.67
  6. Step 6: Final answer
    x = 38,336.52

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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.