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Finding the Fourth Proportional to 81,177.84, 111,891.60 and 54,310.68

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Solution

The fourth proportional to 81,177.84, 111,891.60 and 54,310.68 is: 74,859.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,177.84 : 111,891.60 = 54,310.68 : x
  2. Step 2: Convert to fraction form
    81,177.84/111,891.60 = 54,310.68/x
  3. Step 3: Cross multiply
    81,177.84x = 111,891.60 × 54,310.68
  4. Step 4: Simplify right side
    81,177.84x = 6,076,908,882.29
  5. Step 5: Solve for x
    x = 6,076,908,882.29/81,177.84
  6. Step 6: Final answer
    x = 74,859.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.