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Finding the Fourth Proportional to 67,400.80, 101,113.35 and 27,961.90

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Solution

The fourth proportional to 67,400.80, 101,113.35 and 27,961.90 is: 41,947.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,400.80 : 101,113.35 = 27,961.90 : x
  2. Step 2: Convert to fraction form
    67,400.80/101,113.35 = 27,961.90/x
  3. Step 3: Cross multiply
    67,400.80x = 101,113.35 × 27,961.90
  4. Step 4: Simplify right side
    67,400.80x = 2,827,321,381.37
  5. Step 5: Solve for x
    x = 2,827,321,381.37/67,400.80
  6. Step 6: Final answer
    x = 41,947.89

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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.