Home / 57,255.24-78,920.92-45,135.96

Finding the Fourth Proportional to 57,255.24, 78,920.92 and 45,135.96

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Solution

The fourth proportional to 57,255.24, 78,920.92 and 45,135.96 is: 62,215.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,255.24 : 78,920.92 = 45,135.96 : x
  2. Step 2: Convert to fraction form
    57,255.24/78,920.92 = 45,135.96/x
  3. Step 3: Cross multiply
    57,255.24x = 78,920.92 × 45,135.96
  4. Step 4: Simplify right side
    57,255.24x = 3,562,171,488.28
  5. Step 5: Solve for x
    x = 3,562,171,488.28/57,255.24
  6. Step 6: Final answer
    x = 62,215.64

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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.