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Finding the Fourth Proportional to 81,397.88, 112,329.92 and 45,100.44

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Solution

The fourth proportional to 81,397.88, 112,329.92 and 45,100.44 is: 62,239.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,397.88 : 112,329.92 = 45,100.44 : x
  2. Step 2: Convert to fraction form
    81,397.88/112,329.92 = 45,100.44/x
  3. Step 3: Cross multiply
    81,397.88x = 112,329.92 × 45,100.44
  4. Step 4: Simplify right side
    81,397.88x = 5,066,128,255.52
  5. Step 5: Solve for x
    x = 5,066,128,255.52/81,397.88
  6. Step 6: Final answer
    x = 62,239.07

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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.