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Finding the Fourth Proportional to 65,489.76, 98,234.61 and 18,742.62

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Solution

The fourth proportional to 65,489.76, 98,234.61 and 18,742.62 is: 28,113.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,489.76 : 98,234.61 = 18,742.62 : x
  2. Step 2: Convert to fraction form
    65,489.76/98,234.61 = 18,742.62/x
  3. Step 3: Cross multiply
    65,489.76x = 98,234.61 × 18,742.62
  4. Step 4: Simplify right side
    65,489.76x = 1,841,173,966.08
  5. Step 5: Solve for x
    x = 1,841,173,966.08/65,489.76
  6. Step 6: Final answer
    x = 28,113.92

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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.