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Finding the Fourth Proportional to 99,697.29, 149,574.20 and 40,575.39

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Solution

The fourth proportional to 99,697.29, 149,574.20 and 40,575.39 is: 60,874.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,697.29 : 149,574.20 = 40,575.39 : x
  2. Step 2: Convert to fraction form
    99,697.29/149,574.20 = 40,575.39/x
  3. Step 3: Cross multiply
    99,697.29x = 149,574.20 × 40,575.39
  4. Step 4: Simplify right side
    99,697.29x = 6,069,031,296.06
  5. Step 5: Solve for x
    x = 6,069,031,296.06/99,697.29
  6. Step 6: Final answer
    x = 60,874.59

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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.