Home / 65,120.18-97,695-20,749.46

Finding the Fourth Proportional to 65,120.18, 97,695 and 20,749.46

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Solution

The fourth proportional to 65,120.18, 97,695 and 20,749.46 is: 31,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,120.18 : 97,695 = 20,749.46 : x
  2. Step 2: Convert to fraction form
    65,120.18/97,695 = 20,749.46/x
  3. Step 3: Cross multiply
    65,120.18x = 97,695 × 20,749.46
  4. Step 4: Simplify right side
    65,120.18x = 2,027,118,494.70
  5. Step 5: Solve for x
    x = 2,027,118,494.70/65,120.18
  6. Step 6: Final answer
    x = 31,128.88

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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.