Home / 80,999.20-121,498.80-46,007.20

Finding the Fourth Proportional to 80,999.20, 121,498.80 and 46,007.20

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Solution

The fourth proportional to 80,999.20, 121,498.80 and 46,007.20 is: 69,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,999.20 : 121,498.80 = 46,007.20 : x
  2. Step 2: Convert to fraction form
    80,999.20/121,498.80 = 46,007.20/x
  3. Step 3: Cross multiply
    80,999.20x = 121,498.80 × 46,007.20
  4. Step 4: Simplify right side
    80,999.20x = 5,589,819,591.36
  5. Step 5: Solve for x
    x = 5,589,819,591.36/80,999.20
  6. Step 6: Final answer
    x = 69,010.80

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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.