Home / 90,591.88-125,028.32-54,782.14

Finding the Fourth Proportional to 90,591.88, 125,028.32 and 54,782.14

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Solution

The fourth proportional to 90,591.88, 125,028.32 and 54,782.14 is: 75,606.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,591.88 : 125,028.32 = 54,782.14 : x
  2. Step 2: Convert to fraction form
    90,591.88/125,028.32 = 54,782.14/x
  3. Step 3: Cross multiply
    90,591.88x = 125,028.32 × 54,782.14
  4. Step 4: Simplify right side
    90,591.88x = 6,849,318,930.20
  5. Step 5: Solve for x
    x = 6,849,318,930.20/90,591.88
  6. Step 6: Final answer
    x = 75,606.32

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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.