Home / 81,331.52-121,767.20-51,675.84

Finding the Fourth Proportional to 81,331.52, 121,767.20 and 51,675.84

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Solution

The fourth proportional to 81,331.52, 121,767.20 and 51,675.84 is: 77,367.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.52 : 121,767.20 = 51,675.84 : x
  2. Step 2: Convert to fraction form
    81,331.52/121,767.20 = 51,675.84/x
  3. Step 3: Cross multiply
    81,331.52x = 121,767.20 × 51,675.84
  4. Step 4: Simplify right side
    81,331.52x = 6,292,422,344.45
  5. Step 5: Solve for x
    x = 6,292,422,344.45/81,331.52
  6. Step 6: Final answer
    x = 77,367.57

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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.