Home / 91,871.78-126,790.41-51,588.22

Finding the Fourth Proportional to 91,871.78, 126,790.41 and 51,588.22

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Solution

The fourth proportional to 91,871.78, 126,790.41 and 51,588.22 is: 71,195.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,871.78 : 126,790.41 = 51,588.22 : x
  2. Step 2: Convert to fraction form
    91,871.78/126,790.41 = 51,588.22/x
  3. Step 3: Cross multiply
    91,871.78x = 126,790.41 × 51,588.22
  4. Step 4: Simplify right side
    91,871.78x = 6,540,891,564.97
  5. Step 5: Solve for x
    x = 6,540,891,564.97/91,871.78
  6. Step 6: Final answer
    x = 71,195.87

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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.