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Finding the Fourth Proportional to 45,934.62, 68,843.19 and 39,987.21

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Solution

The fourth proportional to 45,934.62, 68,843.19 and 39,987.21 is: 59,929.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,934.62 : 68,843.19 = 39,987.21 : x
  2. Step 2: Convert to fraction form
    45,934.62/68,843.19 = 39,987.21/x
  3. Step 3: Cross multiply
    45,934.62x = 68,843.19 × 39,987.21
  4. Step 4: Simplify right side
    45,934.62x = 2,752,847,095.60
  5. Step 5: Solve for x
    x = 2,752,847,095.60/45,934.62
  6. Step 6: Final answer
    x = 59,929.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.