Home / 99,629.61-149,480.10-42,679.62

Finding the Fourth Proportional to 99,629.61, 149,480.10 and 42,679.62

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Solution

The fourth proportional to 99,629.61, 149,480.10 and 42,679.62 is: 64,034.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,629.61 : 149,480.10 = 42,679.62 : x
  2. Step 2: Convert to fraction form
    99,629.61/149,480.10 = 42,679.62/x
  3. Step 3: Cross multiply
    99,629.61x = 149,480.10 × 42,679.62
  4. Step 4: Simplify right side
    99,629.61x = 6,379,753,865.56
  5. Step 5: Solve for x
    x = 6,379,753,865.56/99,629.61
  6. Step 6: Final answer
    x = 64,034.72

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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.