Home / 65,481.18-98,221.69-21,114.51

Finding the Fourth Proportional to 65,481.18, 98,221.69 and 21,114.51

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Solution

The fourth proportional to 65,481.18, 98,221.69 and 21,114.51 is: 31,671.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,481.18 : 98,221.69 = 21,114.51 : x
  2. Step 2: Convert to fraction form
    65,481.18/98,221.69 = 21,114.51/x
  3. Step 3: Cross multiply
    65,481.18x = 98,221.69 × 21,114.51
  4. Step 4: Simplify right side
    65,481.18x = 2,073,902,855.72
  5. Step 5: Solve for x
    x = 2,073,902,855.72/65,481.18
  6. Step 6: Final answer
    x = 31,671.74

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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.