Home / 51,542.98-71,129.32-31,399.86

Finding the Fourth Proportional to 51,542.98, 71,129.32 and 31,399.86

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Solution

The fourth proportional to 51,542.98, 71,129.32 and 31,399.86 is: 43,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,542.98 : 71,129.32 = 31,399.86 : x
  2. Step 2: Convert to fraction form
    51,542.98/71,129.32 = 31,399.86/x
  3. Step 3: Cross multiply
    51,542.98x = 71,129.32 × 31,399.86
  4. Step 4: Simplify right side
    51,542.98x = 2,233,450,334.25
  5. Step 5: Solve for x
    x = 2,233,450,334.25/51,542.98
  6. Step 6: Final answer
    x = 43,331.80

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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.