Home / 80,772.29-121,228.45-80,585.48

Finding the Fourth Proportional to 80,772.29, 121,228.45 and 80,585.48

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Solution

The fourth proportional to 80,772.29, 121,228.45 and 80,585.48 is: 120,948.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,772.29 : 121,228.45 = 80,585.48 : x
  2. Step 2: Convert to fraction form
    80,772.29/121,228.45 = 80,585.48/x
  3. Step 3: Cross multiply
    80,772.29x = 121,228.45 × 80,585.48
  4. Step 4: Simplify right side
    80,772.29x = 9,769,252,934.51
  5. Step 5: Solve for x
    x = 9,769,252,934.51/80,772.29
  6. Step 6: Final answer
    x = 120,948.08

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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.