Home / 90,327.20-124,649.85-54,518.72

Finding the Fourth Proportional to 90,327.20, 124,649.85 and 54,518.72

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Solution

The fourth proportional to 90,327.20, 124,649.85 and 54,518.72 is: 75,234.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,327.20 : 124,649.85 = 54,518.72 : x
  2. Step 2: Convert to fraction form
    90,327.20/124,649.85 = 54,518.72/x
  3. Step 3: Cross multiply
    90,327.20x = 124,649.85 × 54,518.72
  4. Step 4: Simplify right side
    90,327.20x = 6,795,750,270.19
  5. Step 5: Solve for x
    x = 6,795,750,270.19/90,327.20
  6. Step 6: Final answer
    x = 75,234.82

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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.