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Finding the Fourth Proportional to 72,293.70, 108,282.62 and 30,045.69

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Solution

The fourth proportional to 72,293.70, 108,282.62 and 30,045.69 is: 45,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,293.70 : 108,282.62 = 30,045.69 : x
  2. Step 2: Convert to fraction form
    72,293.70/108,282.62 = 30,045.69/x
  3. Step 3: Cross multiply
    72,293.70x = 108,282.62 × 30,045.69
  4. Step 4: Simplify right side
    72,293.70x = 3,253,425,882.68
  5. Step 5: Solve for x
    x = 3,253,425,882.68/72,293.70
  6. Step 6: Final answer
    x = 45,002.90

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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.