Home / 90,712.42-125,180.94-50,425.78

Finding the Fourth Proportional to 90,712.42, 125,180.94 and 50,425.78

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Solution

The fourth proportional to 90,712.42, 125,180.94 and 50,425.78 is: 69,586.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,712.42 : 125,180.94 = 50,425.78 : x
  2. Step 2: Convert to fraction form
    90,712.42/125,180.94 = 50,425.78/x
  3. Step 3: Cross multiply
    90,712.42x = 125,180.94 × 50,425.78
  4. Step 4: Simplify right side
    90,712.42x = 6,312,346,540.63
  5. Step 5: Solve for x
    x = 6,312,346,540.63/90,712.42
  6. Step 6: Final answer
    x = 69,586.35

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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.