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Finding the Fourth Proportional to 77,194.80, 115,792.20 and 27,331.20

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Solution

The fourth proportional to 77,194.80, 115,792.20 and 27,331.20 is: 40,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,194.80 : 115,792.20 = 27,331.20 : x
  2. Step 2: Convert to fraction form
    77,194.80/115,792.20 = 27,331.20/x
  3. Step 3: Cross multiply
    77,194.80x = 115,792.20 × 27,331.20
  4. Step 4: Simplify right side
    77,194.80x = 3,164,739,776.64
  5. Step 5: Solve for x
    x = 3,164,739,776.64/77,194.80
  6. Step 6: Final answer
    x = 40,996.80

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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.