Home / 65,612.16-98,422.32-18,865.44

Finding the Fourth Proportional to 65,612.16, 98,422.32 and 18,865.44

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Solution

The fourth proportional to 65,612.16, 98,422.32 and 18,865.44 is: 28,299.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,612.16 : 98,422.32 = 18,865.44 : x
  2. Step 2: Convert to fraction form
    65,612.16/98,422.32 = 18,865.44/x
  3. Step 3: Cross multiply
    65,612.16x = 98,422.32 × 18,865.44
  4. Step 4: Simplify right side
    65,612.16x = 1,856,780,372.62
  5. Step 5: Solve for x
    x = 1,856,780,372.62/65,612.16
  6. Step 6: Final answer
    x = 28,299.33

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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.