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Finding the Fourth Proportional to 66,343.46, 99,497.63 and 45,279.68

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Solution

The fourth proportional to 66,343.46, 99,497.63 and 45,279.68 is: 67,907.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,343.46 : 99,497.63 = 45,279.68 : x
  2. Step 2: Convert to fraction form
    66,343.46/99,497.63 = 45,279.68/x
  3. Step 3: Cross multiply
    66,343.46x = 99,497.63 × 45,279.68
  4. Step 4: Simplify right side
    66,343.46x = 4,505,220,462.87
  5. Step 5: Solve for x
    x = 4,505,220,462.87/66,343.46
  6. Step 6: Final answer
    x = 67,907.53

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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.