Home / 80,836.40-121,326.60-47,514.80

Finding the Fourth Proportional to 80,836.40, 121,326.60 and 47,514.80

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Solution

The fourth proportional to 80,836.40, 121,326.60 and 47,514.80 is: 71,314.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,836.40 : 121,326.60 = 47,514.80 : x
  2. Step 2: Convert to fraction form
    80,836.40/121,326.60 = 47,514.80/x
  3. Step 3: Cross multiply
    80,836.40x = 121,326.60 × 47,514.80
  4. Step 4: Simplify right side
    80,836.40x = 5,764,809,133.68
  5. Step 5: Solve for x
    x = 5,764,809,133.68/80,836.40
  6. Step 6: Final answer
    x = 71,314.52

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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.