Home / 91,638.21-126,467.82-51,355.72

Finding the Fourth Proportional to 91,638.21, 126,467.82 and 51,355.72

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Solution

The fourth proportional to 91,638.21, 126,467.82 and 51,355.72 is: 70,874.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,638.21 : 126,467.82 = 51,355.72 : x
  2. Step 2: Convert to fraction form
    91,638.21/126,467.82 = 51,355.72/x
  3. Step 3: Cross multiply
    91,638.21x = 126,467.82 × 51,355.72
  4. Step 4: Simplify right side
    91,638.21x = 6,494,845,952.93
  5. Step 5: Solve for x
    x = 6,494,845,952.93/91,638.21
  6. Step 6: Final answer
    x = 70,874.87

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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.