Home / 80,995.80-121,492.98-21,826.56

Finding the Fourth Proportional to 80,995.80, 121,492.98 and 21,826.56

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Solution

The fourth proportional to 80,995.80, 121,492.98 and 21,826.56 is: 32,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,995.80 : 121,492.98 = 21,826.56 : x
  2. Step 2: Convert to fraction form
    80,995.80/121,492.98 = 21,826.56/x
  3. Step 3: Cross multiply
    80,995.80x = 121,492.98 × 21,826.56
  4. Step 4: Simplify right side
    80,995.80x = 2,651,773,817.55
  5. Step 5: Solve for x
    x = 2,651,773,817.55/80,995.80
  6. Step 6: Final answer
    x = 32,739.65

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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.