Home / 90,765.15-125,237.91-54,958.50

Finding the Fourth Proportional to 90,765.15, 125,237.91 and 54,958.50

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Solution

The fourth proportional to 90,765.15, 125,237.91 and 54,958.50 is: 75,831.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,765.15 : 125,237.91 = 54,958.50 : x
  2. Step 2: Convert to fraction form
    90,765.15/125,237.91 = 54,958.50/x
  3. Step 3: Cross multiply
    90,765.15x = 125,237.91 × 54,958.50
  4. Step 4: Simplify right side
    90,765.15x = 6,882,887,676.74
  5. Step 5: Solve for x
    x = 6,882,887,676.74/90,765.15
  6. Step 6: Final answer
    x = 75,831.83

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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.