Home / 45,845.40-68,768.10-18,143.40

Finding the Fourth Proportional to 45,845.40, 68,768.10 and 18,143.40

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Solution

The fourth proportional to 45,845.40, 68,768.10 and 18,143.40 is: 27,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,845.40 : 68,768.10 = 18,143.40 : x
  2. Step 2: Convert to fraction form
    45,845.40/68,768.10 = 18,143.40/x
  3. Step 3: Cross multiply
    45,845.40x = 68,768.10 × 18,143.40
  4. Step 4: Simplify right side
    45,845.40x = 1,247,687,145.54
  5. Step 5: Solve for x
    x = 1,247,687,145.54/45,845.40
  6. Step 6: Final answer
    x = 27,215.10

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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.