Home / 90,712.22-125,185.43-54,908.70

Finding the Fourth Proportional to 90,712.22, 125,185.43 and 54,908.70

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Solution

The fourth proportional to 90,712.22, 125,185.43 and 54,908.70 is: 75,775.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,712.22 : 125,185.43 = 54,908.70 : x
  2. Step 2: Convert to fraction form
    90,712.22/125,185.43 = 54,908.70/x
  3. Step 3: Cross multiply
    90,712.22x = 125,185.43 × 54,908.70
  4. Step 4: Simplify right side
    90,712.22x = 6,873,769,220.24
  5. Step 5: Solve for x
    x = 6,873,769,220.24/90,712.22
  6. Step 6: Final answer
    x = 75,775.56

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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.