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Finding the Fourth Proportional to 81,329.88, 112,209.66 and 45,514.20

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Solution

The fourth proportional to 81,329.88, 112,209.66 and 45,514.20 is: 62,795.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,329.88 : 112,209.66 = 45,514.20 : x
  2. Step 2: Convert to fraction form
    81,329.88/112,209.66 = 45,514.20/x
  3. Step 3: Cross multiply
    81,329.88x = 112,209.66 × 45,514.20
  4. Step 4: Simplify right side
    81,329.88x = 5,107,132,907.17
  5. Step 5: Solve for x
    x = 5,107,132,907.17/81,329.88
  6. Step 6: Final answer
    x = 62,795.28

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1.5x scale

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.