Home / 57,708.20-86,648.70-40,255.40

Finding the Fourth Proportional to 57,708.20, 86,648.70 and 40,255.40

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Solution

The fourth proportional to 57,708.20, 86,648.70 and 40,255.40 is: 60,443.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,708.20 : 86,648.70 = 40,255.40 : x
  2. Step 2: Convert to fraction form
    57,708.20/86,648.70 = 40,255.40/x
  3. Step 3: Cross multiply
    57,708.20x = 86,648.70 × 40,255.40
  4. Step 4: Simplify right side
    57,708.20x = 3,488,078,077.98
  5. Step 5: Solve for x
    x = 3,488,078,077.98/57,708.20
  6. Step 6: Final answer
    x = 60,443.37

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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.