Home / 80,541.78-111,086.07-54,720.30

Finding the Fourth Proportional to 80,541.78, 111,086.07 and 54,720.30

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Solution

The fourth proportional to 80,541.78, 111,086.07 and 54,720.30 is: 75,472.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,541.78 : 111,086.07 = 54,720.30 : x
  2. Step 2: Convert to fraction form
    80,541.78/111,086.07 = 54,720.30/x
  3. Step 3: Cross multiply
    80,541.78x = 111,086.07 × 54,720.30
  4. Step 4: Simplify right side
    80,541.78x = 6,078,663,076.22
  5. Step 5: Solve for x
    x = 6,078,663,076.22/80,541.78
  6. Step 6: Final answer
    x = 75,472.17

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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.