Home / 65,850.11-98,778.34-21,476.78

Finding the Fourth Proportional to 65,850.11, 98,778.34 and 21,476.78

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Solution

The fourth proportional to 65,850.11, 98,778.34 and 21,476.78 is: 32,216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,850.11 : 98,778.34 = 21,476.78 : x
  2. Step 2: Convert to fraction form
    65,850.11/98,778.34 = 21,476.78/x
  3. Step 3: Cross multiply
    65,850.11x = 98,778.34 × 21,476.78
  4. Step 4: Simplify right side
    65,850.11x = 2,121,440,676.95
  5. Step 5: Solve for x
    x = 2,121,440,676.95/65,850.11
  6. Step 6: Final answer
    x = 32,216.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.