Home / 80,829.60-121,244.40-51,280.80

Finding the Fourth Proportional to 80,829.60, 121,244.40 and 51,280.80

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Solution

The fourth proportional to 80,829.60, 121,244.40 and 51,280.80 is: 76,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,829.60 : 121,244.40 = 51,280.80 : x
  2. Step 2: Convert to fraction form
    80,829.60/121,244.40 = 51,280.80/x
  3. Step 3: Cross multiply
    80,829.60x = 121,244.40 × 51,280.80
  4. Step 4: Simplify right side
    80,829.60x = 6,217,509,827.52
  5. Step 5: Solve for x
    x = 6,217,509,827.52/80,829.60
  6. Step 6: Final answer
    x = 76,921.20

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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.