Home / 90,679.20-125,088-57,912.48

Finding the Fourth Proportional to 90,679.20, 125,088 and 57,912.48

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Solution

The fourth proportional to 90,679.20, 125,088 and 57,912.48 is: 79,887.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,679.20 : 125,088 = 57,912.48 : x
  2. Step 2: Convert to fraction form
    90,679.20/125,088 = 57,912.48/x
  3. Step 3: Cross multiply
    90,679.20x = 125,088 × 57,912.48
  4. Step 4: Simplify right side
    90,679.20x = 7,244,156,298.24
  5. Step 5: Solve for x
    x = 7,244,156,298.24/90,679.20
  6. Step 6: Final answer
    x = 79,887.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.