Home / 80,782.28-121,133.18-51,177.60

Finding the Fourth Proportional to 80,782.28, 121,133.18 and 51,177.60

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Solution

The fourth proportional to 80,782.28, 121,133.18 and 51,177.60 is: 76,740.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,782.28 : 121,133.18 = 51,177.60 : x
  2. Step 2: Convert to fraction form
    80,782.28/121,133.18 = 51,177.60/x
  3. Step 3: Cross multiply
    80,782.28x = 121,133.18 × 51,177.60
  4. Step 4: Simplify right side
    80,782.28x = 6,199,305,432.77
  5. Step 5: Solve for x
    x = 6,199,305,432.77/80,782.28
  6. Step 6: Final answer
    x = 76,740.91

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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.