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Finding the Fourth Proportional to 67,218.78, 100,765.86 and 29,758.89

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Solution

The fourth proportional to 67,218.78, 100,765.86 and 29,758.89 is: 44,610.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,218.78 : 100,765.86 = 29,758.89 : x
  2. Step 2: Convert to fraction form
    67,218.78/100,765.86 = 29,758.89/x
  3. Step 3: Cross multiply
    67,218.78x = 100,765.86 × 29,758.89
  4. Step 4: Simplify right side
    67,218.78x = 2,998,680,143.50
  5. Step 5: Solve for x
    x = 2,998,680,143.50/67,218.78
  6. Step 6: Final answer
    x = 44,610.75

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1.5x scale

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.