Home / 90,680.40-125,119.62-54,863.28

Finding the Fourth Proportional to 90,680.40, 125,119.62 and 54,863.28

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Solution

The fourth proportional to 90,680.40, 125,119.62 and 54,863.28 is: 75,699.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,680.40 : 125,119.62 = 54,863.28 : x
  2. Step 2: Convert to fraction form
    90,680.40/125,119.62 = 54,863.28/x
  3. Step 3: Cross multiply
    90,680.40x = 125,119.62 × 54,863.28
  4. Step 4: Simplify right side
    90,680.40x = 6,864,472,745.55
  5. Step 5: Solve for x
    x = 6,864,472,745.55/90,680.40
  6. Step 6: Final answer
    x = 75,699.63

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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.