Home / 90,711.72-125,184.74-54,908.20

Finding the Fourth Proportional to 90,711.72, 125,184.74 and 54,908.20

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Solution

The fourth proportional to 90,711.72, 125,184.74 and 54,908.20 is: 75,774.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,711.72 : 125,184.74 = 54,908.20 : x
  2. Step 2: Convert to fraction form
    90,711.72/125,184.74 = 54,908.20/x
  3. Step 3: Cross multiply
    90,711.72x = 125,184.74 × 54,908.20
  4. Step 4: Simplify right side
    90,711.72x = 6,873,668,740.87
  5. Step 5: Solve for x
    x = 6,873,668,740.87/90,711.72
  6. Step 6: Final answer
    x = 75,774.87

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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.