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Finding the Fourth Proportional to 45,863.80, 68,730.90 and 31,996.60

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Solution

The fourth proportional to 45,863.80, 68,730.90 and 31,996.60 is: 47,949.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,863.80 : 68,730.90 = 31,996.60 : x
  2. Step 2: Convert to fraction form
    45,863.80/68,730.90 = 31,996.60/x
  3. Step 3: Cross multiply
    45,863.80x = 68,730.90 × 31,996.60
  4. Step 4: Simplify right side
    45,863.80x = 2,199,155,114.94
  5. Step 5: Solve for x
    x = 2,199,155,114.94/45,863.80
  6. Step 6: Final answer
    x = 47,949.69

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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.