Home / 90,680.20-125,089.38-57,913.48

Finding the Fourth Proportional to 90,680.20, 125,089.38 and 57,913.48

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Solution

The fourth proportional to 90,680.20, 125,089.38 and 57,913.48 is: 79,889.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,680.20 : 125,089.38 = 57,913.48 : x
  2. Step 2: Convert to fraction form
    90,680.20/125,089.38 = 57,913.48/x
  3. Step 3: Cross multiply
    90,680.20x = 125,089.38 × 57,913.48
  4. Step 4: Simplify right side
    90,680.20x = 7,244,361,306.84
  5. Step 5: Solve for x
    x = 7,244,361,306.84/90,680.20
  6. Step 6: Final answer
    x = 79,889.12

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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.