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Finding the Fourth Proportional to 65,410.88, 98,117.24 and 18,663.75

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Solution

The fourth proportional to 65,410.88, 98,117.24 and 18,663.75 is: 27,995.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,410.88 : 98,117.24 = 18,663.75 : x
  2. Step 2: Convert to fraction form
    65,410.88/98,117.24 = 18,663.75/x
  3. Step 3: Cross multiply
    65,410.88x = 98,117.24 × 18,663.75
  4. Step 4: Simplify right side
    65,410.88x = 1,831,235,544.73
  5. Step 5: Solve for x
    x = 1,831,235,544.73/65,410.88
  6. Step 6: Final answer
    x = 27,995.89

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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.