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Finding the Fourth Proportional to 66,867.80, 100,458.42 and 63,084.89

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Solution

The fourth proportional to 66,867.80, 100,458.42 and 63,084.89 is: 94,775.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,867.80 : 100,458.42 = 63,084.89 : x
  2. Step 2: Convert to fraction form
    66,867.80/100,458.42 = 63,084.89/x
  3. Step 3: Cross multiply
    66,867.80x = 100,458.42 × 63,084.89
  4. Step 4: Simplify right side
    66,867.80x = 6,337,407,872.98
  5. Step 5: Solve for x
    x = 6,337,407,872.98/66,867.80
  6. Step 6: Final answer
    x = 94,775.19

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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.