Home / 103,578.32-155,370.92-28,699.22

Finding the Fourth Proportional to 103,578.32, 155,370.92 and 28,699.22

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Solution

The fourth proportional to 103,578.32, 155,370.92 and 28,699.22 is: 43,049.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,578.32 : 155,370.92 = 28,699.22 : x
  2. Step 2: Convert to fraction form
    103,578.32/155,370.92 = 28,699.22/x
  3. Step 3: Cross multiply
    103,578.32x = 155,370.92 × 28,699.22
  4. Step 4: Simplify right side
    103,578.32x = 4,459,024,214.68
  5. Step 5: Solve for x
    x = 4,459,024,214.68/103,578.32
  6. Step 6: Final answer
    x = 43,049.78

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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.