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Finding the Fourth Proportional to 65,399.25, 98,099.80 and 18,652.13

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Solution

The fourth proportional to 65,399.25, 98,099.80 and 18,652.13 is: 27,978.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,399.25 : 98,099.80 = 18,652.13 : x
  2. Step 2: Convert to fraction form
    65,399.25/98,099.80 = 18,652.13/x
  3. Step 3: Cross multiply
    65,399.25x = 98,099.80 × 18,652.13
  4. Step 4: Simplify right side
    65,399.25x = 1,829,769,685.44
  5. Step 5: Solve for x
    x = 1,829,769,685.44/65,399.25
  6. Step 6: Final answer
    x = 27,978.45

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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.