Home / 81,819.27-112,922.10-68,369.22

Finding the Fourth Proportional to 81,819.27, 112,922.10 and 68,369.22

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Solution

The fourth proportional to 81,819.27, 112,922.10 and 68,369.22 is: 94,359.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,819.27 : 112,922.10 = 68,369.22 : x
  2. Step 2: Convert to fraction form
    81,819.27/112,922.10 = 68,369.22/x
  3. Step 3: Cross multiply
    81,819.27x = 112,922.10 × 68,369.22
  4. Step 4: Simplify right side
    81,819.27x = 7,720,395,897.76
  5. Step 5: Solve for x
    x = 7,720,395,897.76/81,819.27
  6. Step 6: Final answer
    x = 94,359.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.