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Finding the Fourth Proportional to 99,375.62, 149,059.98 and 28,298.70

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Solution

The fourth proportional to 99,375.62, 149,059.98 and 28,298.70 is: 42,447.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,375.62 : 149,059.98 = 28,298.70 : x
  2. Step 2: Convert to fraction form
    99,375.62/149,059.98 = 28,298.70/x
  3. Step 3: Cross multiply
    99,375.62x = 149,059.98 × 28,298.70
  4. Step 4: Simplify right side
    99,375.62x = 4,218,203,656.03
  5. Step 5: Solve for x
    x = 4,218,203,656.03/99,375.62
  6. Step 6: Final answer
    x = 42,447.07

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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.