Home / 81,649.28-122,479.86-34,216.76

Finding the Fourth Proportional to 81,649.28, 122,479.86 and 34,216.76

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Solution

The fourth proportional to 81,649.28, 122,479.86 and 34,216.76 is: 51,327.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,649.28 : 122,479.86 = 34,216.76 : x
  2. Step 2: Convert to fraction form
    81,649.28/122,479.86 = 34,216.76/x
  3. Step 3: Cross multiply
    81,649.28x = 122,479.86 × 34,216.76
  4. Step 4: Simplify right side
    81,649.28x = 4,190,863,974.45
  5. Step 5: Solve for x
    x = 4,190,863,974.45/81,649.28
  6. Step 6: Final answer
    x = 51,327.63

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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.