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Finding the Fourth Proportional to 48,751.19, 73,126.78 and 11,815.19

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Solution

The fourth proportional to 48,751.19, 73,126.78 and 11,815.19 is: 17,722.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,751.19 : 73,126.78 = 11,815.19 : x
  2. Step 2: Convert to fraction form
    48,751.19/73,126.78 = 11,815.19/x
  3. Step 3: Cross multiply
    48,751.19x = 73,126.78 × 11,815.19
  4. Step 4: Simplify right side
    48,751.19x = 864,006,799.79
  5. Step 5: Solve for x
    x = 864,006,799.79/48,751.19
  6. Step 6: Final answer
    x = 17,722.78

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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.