Home / 57,126.44-78,761.39-39,190.31

Finding the Fourth Proportional to 57,126.44, 78,761.39 and 39,190.31

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Solution

The fourth proportional to 57,126.44, 78,761.39 and 39,190.31 is: 54,032.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,126.44 : 78,761.39 = 39,190.31 : x
  2. Step 2: Convert to fraction form
    57,126.44/78,761.39 = 39,190.31/x
  3. Step 3: Cross multiply
    57,126.44x = 78,761.39 × 39,190.31
  4. Step 4: Simplify right side
    57,126.44x = 3,086,683,290.13
  5. Step 5: Solve for x
    x = 3,086,683,290.13/57,126.44
  6. Step 6: Final answer
    x = 54,032.48

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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.