Home / 65,708.82-98,572.14-21,321.23

Finding the Fourth Proportional to 65,708.82, 98,572.14 and 21,321.23

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Solution

The fourth proportional to 65,708.82, 98,572.14 and 21,321.23 is: 31,984.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,708.82 : 98,572.14 = 21,321.23 : x
  2. Step 2: Convert to fraction form
    65,708.82/98,572.14 = 21,321.23/x
  3. Step 3: Cross multiply
    65,708.82x = 98,572.14 × 21,321.23
  4. Step 4: Simplify right side
    65,708.82x = 2,101,678,775.67
  5. Step 5: Solve for x
    x = 2,101,678,775.67/65,708.82
  6. Step 6: Final answer
    x = 31,984.73

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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.