Home / 83,764.80-125,647.20-21,435.30

Finding the Fourth Proportional to 83,764.80, 125,647.20 and 21,435.30

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Solution

The fourth proportional to 83,764.80, 125,647.20 and 21,435.30 is: 32,152.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,764.80 : 125,647.20 = 21,435.30 : x
  2. Step 2: Convert to fraction form
    83,764.80/125,647.20 = 21,435.30/x
  3. Step 3: Cross multiply
    83,764.80x = 125,647.20 × 21,435.30
  4. Step 4: Simplify right side
    83,764.80x = 2,693,285,426.16
  5. Step 5: Solve for x
    x = 2,693,285,426.16/83,764.80
  6. Step 6: Final answer
    x = 32,152.95

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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.