Home / 80,804.64-121,357.68-66,044.88

Finding the Fourth Proportional to 80,804.64, 121,357.68 and 66,044.88

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Solution

The fourth proportional to 80,804.64, 121,357.68 and 66,044.88 is: 99,190.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,804.64 : 121,357.68 = 66,044.88 : x
  2. Step 2: Convert to fraction form
    80,804.64/121,357.68 = 66,044.88/x
  3. Step 3: Cross multiply
    80,804.64x = 121,357.68 × 66,044.88
  4. Step 4: Simplify right side
    80,804.64x = 8,015,053,412.68
  5. Step 5: Solve for x
    x = 8,015,053,412.68/80,804.64
  6. Step 6: Final answer
    x = 99,190.51

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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.