Home / 80,927.20-121,376.11-21,749.03

Finding the Fourth Proportional to 80,927.20, 121,376.11 and 21,749.03

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Solution

The fourth proportional to 80,927.20, 121,376.11 and 21,749.03 is: 32,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,927.20 : 121,376.11 = 21,749.03 : x
  2. Step 2: Convert to fraction form
    80,927.20/121,376.11 = 21,749.03/x
  3. Step 3: Cross multiply
    80,927.20x = 121,376.11 × 21,749.03
  4. Step 4: Simplify right side
    80,927.20x = 2,639,812,803.15
  5. Step 5: Solve for x
    x = 2,639,812,803.15/80,927.20
  6. Step 6: Final answer
    x = 32,619.60

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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.