Home / 87,445.31-131,135.78-31,270.19

Finding the Fourth Proportional to 87,445.31, 131,135.78 and 31,270.19

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Solution

The fourth proportional to 87,445.31, 131,135.78 and 31,270.19 is: 46,893.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,445.31 : 131,135.78 = 31,270.19 : x
  2. Step 2: Convert to fraction form
    87,445.31/131,135.78 = 31,270.19/x
  3. Step 3: Cross multiply
    87,445.31x = 131,135.78 × 31,270.19
  4. Step 4: Simplify right side
    87,445.31x = 4,100,640,178.89
  5. Step 5: Solve for x
    x = 4,100,640,178.89/87,445.31
  6. Step 6: Final answer
    x = 46,893.77

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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.