Home / 80,913.60-121,327.20-34,113.60

Finding the Fourth Proportional to 80,913.60, 121,327.20 and 34,113.60

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Solution

The fourth proportional to 80,913.60, 121,327.20 and 34,113.60 is: 51,152.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,913.60 : 121,327.20 = 34,113.60 : x
  2. Step 2: Convert to fraction form
    80,913.60/121,327.20 = 34,113.60/x
  3. Step 3: Cross multiply
    80,913.60x = 121,327.20 × 34,113.60
  4. Step 4: Simplify right side
    80,913.60x = 4,138,907,569.92
  5. Step 5: Solve for x
    x = 4,138,907,569.92/80,913.60
  6. Step 6: Final answer
    x = 51,152.19

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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.