Home / 81,029.88-121,520.34-21,866.22

Finding the Fourth Proportional to 81,029.88, 121,520.34 and 21,866.22

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Solution

The fourth proportional to 81,029.88, 121,520.34 and 21,866.22 is: 32,792.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,029.88 : 121,520.34 = 21,866.22 : x
  2. Step 2: Convert to fraction form
    81,029.88/121,520.34 = 21,866.22/x
  3. Step 3: Cross multiply
    81,029.88x = 121,520.34 × 21,866.22
  4. Step 4: Simplify right side
    81,029.88x = 2,657,190,488.91
  5. Step 5: Solve for x
    x = 2,657,190,488.91/81,029.88
  6. Step 6: Final answer
    x = 32,792.72

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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.