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Finding the Fourth Proportional to 72,500.89, 108,747.01 and 43,105.79

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Solution

The fourth proportional to 72,500.89, 108,747.01 and 43,105.79 is: 64,656.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,500.89 : 108,747.01 = 43,105.79 : x
  2. Step 2: Convert to fraction form
    72,500.89/108,747.01 = 43,105.79/x
  3. Step 3: Cross multiply
    72,500.89x = 108,747.01 × 43,105.79
  4. Step 4: Simplify right side
    72,500.89x = 4,687,625,247.77
  5. Step 5: Solve for x
    x = 4,687,625,247.77/72,500.89
  6. Step 6: Final answer
    x = 64,656.11

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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.