Home / 103,570.32-155,358.92-28,691.22

Finding the Fourth Proportional to 103,570.32, 155,358.92 and 28,691.22

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Solution

The fourth proportional to 103,570.32, 155,358.92 and 28,691.22 is: 43,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,570.32 : 155,358.92 = 28,691.22 : x
  2. Step 2: Convert to fraction form
    103,570.32/155,358.92 = 28,691.22/x
  3. Step 3: Cross multiply
    103,570.32x = 155,358.92 × 28,691.22
  4. Step 4: Simplify right side
    103,570.32x = 4,457,436,952.68
  5. Step 5: Solve for x
    x = 4,457,436,952.68/103,570.32
  6. Step 6: Final answer
    x = 43,037.78

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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.