Home / 80,695.06-121,042.60-21,530.95

Finding the Fourth Proportional to 80,695.06, 121,042.60 and 21,530.95

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Solution

The fourth proportional to 80,695.06, 121,042.60 and 21,530.95 is: 32,296.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,695.06 : 121,042.60 = 21,530.95 : x
  2. Step 2: Convert to fraction form
    80,695.06/121,042.60 = 21,530.95/x
  3. Step 3: Cross multiply
    80,695.06x = 121,042.60 × 21,530.95
  4. Step 4: Simplify right side
    80,695.06x = 2,606,161,812.04
  5. Step 5: Solve for x
    x = 2,606,161,812.04/80,695.06
  6. Step 6: Final answer
    x = 32,296.42

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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.