Home / 63,105.17-87,057.50-40,122.68

Finding the Fourth Proportional to 63,105.17, 87,057.50 and 40,122.68

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Solution

The fourth proportional to 63,105.17, 87,057.50 and 40,122.68 is: 55,351.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,105.17 : 87,057.50 = 40,122.68 : x
  2. Step 2: Convert to fraction form
    63,105.17/87,057.50 = 40,122.68/x
  3. Step 3: Cross multiply
    63,105.17x = 87,057.50 × 40,122.68
  4. Step 4: Simplify right side
    63,105.17x = 3,492,979,578.20
  5. Step 5: Solve for x
    x = 3,492,979,578.20/63,105.17
  6. Step 6: Final answer
    x = 55,351.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.