Home / 65,778.32-98,644.52-21,396.80

Finding the Fourth Proportional to 65,778.32, 98,644.52 and 21,396.80

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Solution

The fourth proportional to 65,778.32, 98,644.52 and 21,396.80 is: 32,087.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,778.32 : 98,644.52 = 21,396.80 : x
  2. Step 2: Convert to fraction form
    65,778.32/98,644.52 = 21,396.80/x
  3. Step 3: Cross multiply
    65,778.32x = 98,644.52 × 21,396.80
  4. Step 4: Simplify right side
    65,778.32x = 2,110,677,065.54
  5. Step 5: Solve for x
    x = 2,110,677,065.54/65,778.32
  6. Step 6: Final answer
    x = 32,087.73

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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.