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Finding the Fourth Proportional to 60,667.10, 91,000.65 and 54,251.90

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Solution

The fourth proportional to 60,667.10, 91,000.65 and 54,251.90 is: 81,377.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,667.10 : 91,000.65 = 54,251.90 : x
  2. Step 2: Convert to fraction form
    60,667.10/91,000.65 = 54,251.90/x
  3. Step 3: Cross multiply
    60,667.10x = 91,000.65 × 54,251.90
  4. Step 4: Simplify right side
    60,667.10x = 4,936,958,163.74
  5. Step 5: Solve for x
    x = 4,936,958,163.74/60,667.10
  6. Step 6: Final answer
    x = 81,377.85

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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.