Home / 81,073.59-121,527.77-45,939.03

Finding the Fourth Proportional to 81,073.59, 121,527.77 and 45,939.03

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Solution

The fourth proportional to 81,073.59, 121,527.77 and 45,939.03 is: 68,861.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,073.59 : 121,527.77 = 45,939.03 : x
  2. Step 2: Convert to fraction form
    81,073.59/121,527.77 = 45,939.03/x
  3. Step 3: Cross multiply
    81,073.59x = 121,527.77 × 45,939.03
  4. Step 4: Simplify right side
    81,073.59x = 5,582,867,642.17
  5. Step 5: Solve for x
    x = 5,582,867,642.17/81,073.59
  6. Step 6: Final answer
    x = 68,861.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.