Home / 80,732.40-121,012.20-36,351.60

Finding the Fourth Proportional to 80,732.40, 121,012.20 and 36,351.60

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Solution

The fourth proportional to 80,732.40, 121,012.20 and 36,351.60 is: 54,488.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,732.40 : 121,012.20 = 36,351.60 : x
  2. Step 2: Convert to fraction form
    80,732.40/121,012.20 = 36,351.60/x
  3. Step 3: Cross multiply
    80,732.40x = 121,012.20 × 36,351.60
  4. Step 4: Simplify right side
    80,732.40x = 4,398,987,089.52
  5. Step 5: Solve for x
    x = 4,398,987,089.52/80,732.40
  6. Step 6: Final answer
    x = 54,488.50

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1.5x scale

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.