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Finding the Fourth Proportional to 87,673.40, 131,482.12 and 28,494.80

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Solution

The fourth proportional to 87,673.40, 131,482.12 and 28,494.80 is: 42,733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,673.40 : 131,482.12 = 28,494.80 : x
  2. Step 2: Convert to fraction form
    87,673.40/131,482.12 = 28,494.80/x
  3. Step 3: Cross multiply
    87,673.40x = 131,482.12 × 28,494.80
  4. Step 4: Simplify right side
    87,673.40x = 3,746,556,712.98
  5. Step 5: Solve for x
    x = 3,746,556,712.98/87,673.40
  6. Step 6: Final answer
    x = 42,733.11

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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.