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Finding the Fourth Proportional to 65,479.76, 98,269.08 and 52,489

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Solution

The fourth proportional to 65,479.76, 98,269.08 and 52,489 is: 78,773.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,479.76 : 98,269.08 = 52,489 : x
  2. Step 2: Convert to fraction form
    65,479.76/98,269.08 = 52,489/x
  3. Step 3: Cross multiply
    65,479.76x = 98,269.08 × 52,489
  4. Step 4: Simplify right side
    65,479.76x = 5,158,045,740.12
  5. Step 5: Solve for x
    x = 5,158,045,740.12/65,479.76
  6. Step 6: Final answer
    x = 78,773.13

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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.