Home / 80,772.30-121,148.88-21,612.54

Finding the Fourth Proportional to 80,772.30, 121,148.88 and 21,612.54

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Solution

The fourth proportional to 80,772.30, 121,148.88 and 21,612.54 is: 32,416.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,772.30 : 121,148.88 = 21,612.54 : x
  2. Step 2: Convert to fraction form
    80,772.30/121,148.88 = 21,612.54/x
  3. Step 3: Cross multiply
    80,772.30x = 121,148.88 × 21,612.54
  4. Step 4: Simplify right side
    80,772.30x = 2,618,335,014.96
  5. Step 5: Solve for x
    x = 2,618,335,014.96/80,772.30
  6. Step 6: Final answer
    x = 32,416.25

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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.