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Finding the Fourth Proportional to 99,833.62, 149,764.95 and 40,672.90

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Solution

The fourth proportional to 99,833.62, 149,764.95 and 40,672.90 is: 61,015.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,833.62 : 149,764.95 = 40,672.90 : x
  2. Step 2: Convert to fraction form
    99,833.62/149,764.95 = 40,672.90/x
  3. Step 3: Cross multiply
    99,833.62x = 149,764.95 × 40,672.90
  4. Step 4: Simplify right side
    99,833.62x = 6,091,374,834.86
  5. Step 5: Solve for x
    x = 6,091,374,834.86/99,833.62
  6. Step 6: Final answer
    x = 61,015.27

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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.