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Finding the Fourth Proportional to 71,812.80, 107,764.08 and 27,443.40

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Solution

The fourth proportional to 71,812.80, 107,764.08 and 27,443.40 is: 41,182.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,812.80 : 107,764.08 = 27,443.40 : x
  2. Step 2: Convert to fraction form
    71,812.80/107,764.08 = 27,443.40/x
  3. Step 3: Cross multiply
    71,812.80x = 107,764.08 × 27,443.40
  4. Step 4: Simplify right side
    71,812.80x = 2,957,412,753.07
  5. Step 5: Solve for x
    x = 2,957,412,753.07/71,812.80
  6. Step 6: Final answer
    x = 41,182.25

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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.