Home / 55,451.76-76,523.32-31,578.44

Finding the Fourth Proportional to 55,451.76, 76,523.32 and 31,578.44

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Solution

The fourth proportional to 55,451.76, 76,523.32 and 31,578.44 is: 43,578.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,451.76 : 76,523.32 = 31,578.44 : x
  2. Step 2: Convert to fraction form
    55,451.76/76,523.32 = 31,578.44/x
  3. Step 3: Cross multiply
    55,451.76x = 76,523.32 × 31,578.44
  4. Step 4: Simplify right side
    55,451.76x = 2,416,487,069.22
  5. Step 5: Solve for x
    x = 2,416,487,069.22/55,451.76
  6. Step 6: Final answer
    x = 43,578.19

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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.