Home / 91,871.30-126,788.67-51,040.22

Finding the Fourth Proportional to 91,871.30, 126,788.67 and 51,040.22

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Solution

The fourth proportional to 91,871.30, 126,788.67 and 51,040.22 is: 70,438.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,871.30 : 126,788.67 = 51,040.22 : x
  2. Step 2: Convert to fraction form
    91,871.30/126,788.67 = 51,040.22/x
  3. Step 3: Cross multiply
    91,871.30x = 126,788.67 × 51,040.22
  4. Step 4: Simplify right side
    91,871.30x = 6,471,321,118.39
  5. Step 5: Solve for x
    x = 6,471,321,118.39/91,871.30
  6. Step 6: Final answer
    x = 70,438.98

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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.