Home / 91,260.80-136,891.58-28,080.52

Finding the Fourth Proportional to 91,260.80, 136,891.58 and 28,080.52

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Solution

The fourth proportional to 91,260.80, 136,891.58 and 28,080.52 is: 42,120.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,260.80 : 136,891.58 = 28,080.52 : x
  2. Step 2: Convert to fraction form
    91,260.80/136,891.58 = 28,080.52/x
  3. Step 3: Cross multiply
    91,260.80x = 136,891.58 × 28,080.52
  4. Step 4: Simplify right side
    91,260.80x = 3,843,986,750.02
  5. Step 5: Solve for x
    x = 3,843,986,750.02/91,260.80
  6. Step 6: Final answer
    x = 42,120.90

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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.