Home / 80,701.25-121,052.48-28,110.65

Finding the Fourth Proportional to 80,701.25, 121,052.48 and 28,110.65

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Solution

The fourth proportional to 80,701.25, 121,052.48 and 28,110.65 is: 42,166.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,701.25 : 121,052.48 = 28,110.65 : x
  2. Step 2: Convert to fraction form
    80,701.25/121,052.48 = 28,110.65/x
  3. Step 3: Cross multiply
    80,701.25x = 121,052.48 × 28,110.65
  4. Step 4: Simplify right side
    80,701.25x = 3,402,863,151.10
  5. Step 5: Solve for x
    x = 3,402,863,151.10/80,701.25
  6. Step 6: Final answer
    x = 42,166.18

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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.