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Finding the Fourth Proportional to 65,347.22, 98,015.34 and 20,961.92

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Solution

The fourth proportional to 65,347.22, 98,015.34 and 20,961.92 is: 31,441.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,347.22 : 98,015.34 = 20,961.92 : x
  2. Step 2: Convert to fraction form
    65,347.22/98,015.34 = 20,961.92/x
  3. Step 3: Cross multiply
    65,347.22x = 98,015.34 × 20,961.92
  4. Step 4: Simplify right side
    65,347.22x = 2,054,589,715.85
  5. Step 5: Solve for x
    x = 2,054,589,715.85/65,347.22
  6. Step 6: Final answer
    x = 31,441.12

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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.