Home / 80,986.47-121,480.52-28,397.22

Finding the Fourth Proportional to 80,986.47, 121,480.52 and 28,397.22

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Solution

The fourth proportional to 80,986.47, 121,480.52 and 28,397.22 is: 42,596.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986.47 : 121,480.52 = 28,397.22 : x
  2. Step 2: Convert to fraction form
    80,986.47/121,480.52 = 28,397.22/x
  3. Step 3: Cross multiply
    80,986.47x = 121,480.52 × 28,397.22
  4. Step 4: Simplify right side
    80,986.47x = 3,449,709,052.15
  5. Step 5: Solve for x
    x = 3,449,709,052.15/80,986.47
  6. Step 6: Final answer
    x = 42,596.12

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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.