Home / 80,713.25-121,070.48-28,122.65

Finding the Fourth Proportional to 80,713.25, 121,070.48 and 28,122.65

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Solution

The fourth proportional to 80,713.25, 121,070.48 and 28,122.65 is: 42,184.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,713.25 : 121,070.48 = 28,122.65 : x
  2. Step 2: Convert to fraction form
    80,713.25/121,070.48 = 28,122.65/x
  3. Step 3: Cross multiply
    80,713.25x = 121,070.48 × 28,122.65
  4. Step 4: Simplify right side
    80,713.25x = 3,404,821,988.41
  5. Step 5: Solve for x
    x = 3,404,821,988.41/80,713.25
  6. Step 6: Final answer
    x = 42,184.18

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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.