Home / 80,578.28-111,108.38-55,088.80

Finding the Fourth Proportional to 80,578.28, 111,108.38 and 55,088.80

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Solution

The fourth proportional to 80,578.28, 111,108.38 and 55,088.80 is: 75,961.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,578.28 : 111,108.38 = 55,088.80 : x
  2. Step 2: Convert to fraction form
    80,578.28/111,108.38 = 55,088.80/x
  3. Step 3: Cross multiply
    80,578.28x = 111,108.38 × 55,088.80
  4. Step 4: Simplify right side
    80,578.28x = 6,120,827,324.14
  5. Step 5: Solve for x
    x = 6,120,827,324.14/80,578.28
  6. Step 6: Final answer
    x = 75,961.26

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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.