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Finding the Fourth Proportional to 79,159.47, 109,192.82 and 68,530.65

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Solution

The fourth proportional to 79,159.47, 109,192.82 and 68,530.65 is: 94,531.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,159.47 : 109,192.82 = 68,530.65 : x
  2. Step 2: Convert to fraction form
    79,159.47/109,192.82 = 68,530.65/x
  3. Step 3: Cross multiply
    79,159.47x = 109,192.82 × 68,530.65
  4. Step 4: Simplify right side
    79,159.47x = 7,483,054,383.97
  5. Step 5: Solve for x
    x = 7,483,054,383.97/79,159.47
  6. Step 6: Final answer
    x = 94,531.39

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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.