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Finding the Fourth Proportional to 66,648.04, 99,922.68 and 40,346.56

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Solution

The fourth proportional to 66,648.04, 99,922.68 and 40,346.56 is: 60,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,648.04 : 99,922.68 = 40,346.56 : x
  2. Step 2: Convert to fraction form
    66,648.04/99,922.68 = 40,346.56/x
  3. Step 3: Cross multiply
    66,648.04x = 99,922.68 × 40,346.56
  4. Step 4: Simplify right side
    66,648.04x = 4,031,536,403.98
  5. Step 5: Solve for x
    x = 4,031,536,403.98/66,648.04
  6. Step 6: Final answer
    x = 60,489.95

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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.