Home / 91,768.82-126,506.90-64,863.86

Finding the Fourth Proportional to 91,768.82, 126,506.90 and 64,863.86

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Solution

The fourth proportional to 91,768.82, 126,506.90 and 64,863.86 is: 89,417.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,768.82 : 126,506.90 = 64,863.86 : x
  2. Step 2: Convert to fraction form
    91,768.82/126,506.90 = 64,863.86/x
  3. Step 3: Cross multiply
    91,768.82x = 126,506.90 × 64,863.86
  4. Step 4: Simplify right side
    91,768.82x = 8,205,725,380.26
  5. Step 5: Solve for x
    x = 8,205,725,380.26/91,768.82
  6. Step 6: Final answer
    x = 89,417.36

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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.