Home / 66,131.24-91,220.82-39,255.56

Finding the Fourth Proportional to 66,131.24, 91,220.82 and 39,255.56

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Solution

The fourth proportional to 66,131.24, 91,220.82 and 39,255.56 is: 54,148.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,131.24 : 91,220.82 = 39,255.56 : x
  2. Step 2: Convert to fraction form
    66,131.24/91,220.82 = 39,255.56/x
  3. Step 3: Cross multiply
    66,131.24x = 91,220.82 × 39,255.56
  4. Step 4: Simplify right side
    66,131.24x = 3,580,924,372.76
  5. Step 5: Solve for x
    x = 3,580,924,372.76/66,131.24
  6. Step 6: Final answer
    x = 54,148.76

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1.5x scale

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.