Home / 90,710.31-125,182.94-54,906.87

Finding the Fourth Proportional to 90,710.31, 125,182.94 and 54,906.87

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Solution

The fourth proportional to 90,710.31, 125,182.94 and 54,906.87 is: 75,773.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,710.31 : 125,182.94 = 54,906.87 : x
  2. Step 2: Convert to fraction form
    90,710.31/125,182.94 = 54,906.87/x
  3. Step 3: Cross multiply
    90,710.31x = 125,182.94 × 54,906.87
  4. Step 4: Simplify right side
    90,710.31x = 6,873,403,138.26
  5. Step 5: Solve for x
    x = 6,873,403,138.26/90,710.31
  6. Step 6: Final answer
    x = 75,773.12

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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.