Home / 80,976.81-121,485.72-57,330.69

Finding the Fourth Proportional to 80,976.81, 121,485.72 and 57,330.69

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Solution

The fourth proportional to 80,976.81, 121,485.72 and 57,330.69 is: 86,010.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,976.81 : 121,485.72 = 57,330.69 : x
  2. Step 2: Convert to fraction form
    80,976.81/121,485.72 = 57,330.69/x
  3. Step 3: Cross multiply
    80,976.81x = 121,485.72 × 57,330.69
  4. Step 4: Simplify right side
    80,976.81x = 6,964,859,912.17
  5. Step 5: Solve for x
    x = 6,964,859,912.17/80,976.81
  6. Step 6: Final answer
    x = 86,010.55

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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.