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Finding the Fourth Proportional to 72,291.33, 99,819.41 and 48,115.53

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Solution

The fourth proportional to 72,291.33, 99,819.41 and 48,115.53 is: 66,437.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,291.33 : 99,819.41 = 48,115.53 : x
  2. Step 2: Convert to fraction form
    72,291.33/99,819.41 = 48,115.53/x
  3. Step 3: Cross multiply
    72,291.33x = 99,819.41 × 48,115.53
  4. Step 4: Simplify right side
    72,291.33x = 4,802,863,575.86
  5. Step 5: Solve for x
    x = 4,802,863,575.86/72,291.33
  6. Step 6: Final answer
    x = 66,437.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.