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Finding the Fourth Proportional to 80,436, 111,001.77 and 46,908.48

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Solution

The fourth proportional to 80,436, 111,001.77 and 46,908.48 is: 64,733.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,436 : 111,001.77 = 46,908.48 : x
  2. Step 2: Convert to fraction form
    80,436/111,001.77 = 46,908.48/x
  3. Step 3: Cross multiply
    80,436x = 111,001.77 × 46,908.48
  4. Step 4: Simplify right side
    80,436x = 5,206,924,308.01
  5. Step 5: Solve for x
    x = 5,206,924,308.01/80,436
  6. Step 6: Final answer
    x = 64,733.75

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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.