Home / 65,489.28-98,236.32-21,116.67

Finding the Fourth Proportional to 65,489.28, 98,236.32 and 21,116.67

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Solution

The fourth proportional to 65,489.28, 98,236.32 and 21,116.67 is: 31,675.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,489.28 : 98,236.32 = 21,116.67 : x
  2. Step 2: Convert to fraction form
    65,489.28/98,236.32 = 21,116.67/x
  3. Step 3: Cross multiply
    65,489.28x = 98,236.32 × 21,116.67
  4. Step 4: Simplify right side
    65,489.28x = 2,074,423,951.45
  5. Step 5: Solve for x
    x = 2,074,423,951.45/65,489.28
  6. Step 6: Final answer
    x = 31,675.78

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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.