Home / 65,128.26-97,691.30-20,754.40

Finding the Fourth Proportional to 65,128.26, 97,691.30 and 20,754.40

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Solution

The fourth proportional to 65,128.26, 97,691.30 and 20,754.40 is: 31,131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,128.26 : 97,691.30 = 20,754.40 : x
  2. Step 2: Convert to fraction form
    65,128.26/97,691.30 = 20,754.40/x
  3. Step 3: Cross multiply
    65,128.26x = 97,691.30 × 20,754.40
  4. Step 4: Simplify right side
    65,128.26x = 2,027,524,316.72
  5. Step 5: Solve for x
    x = 2,027,524,316.72/65,128.26
  6. Step 6: Final answer
    x = 31,131.25

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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.