Home / 81,231.80-121,746.22-39,104.05

Finding the Fourth Proportional to 81,231.80, 121,746.22 and 39,104.05

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Solution

The fourth proportional to 81,231.80, 121,746.22 and 39,104.05 is: 58,607.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,231.80 : 121,746.22 = 39,104.05 : x
  2. Step 2: Convert to fraction form
    81,231.80/121,746.22 = 39,104.05/x
  3. Step 3: Cross multiply
    81,231.80x = 121,746.22 × 39,104.05
  4. Step 4: Simplify right side
    81,231.80x = 4,760,770,274.19
  5. Step 5: Solve for x
    x = 4,760,770,274.19/81,231.80
  6. Step 6: Final answer
    x = 58,607.22

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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.