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Finding the Fourth Proportional to 65,986.96, 98,980.32 and 18,601.96

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Solution

The fourth proportional to 65,986.96, 98,980.32 and 18,601.96 is: 27,902.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,986.96 : 98,980.32 = 18,601.96 : x
  2. Step 2: Convert to fraction form
    65,986.96/98,980.32 = 18,601.96/x
  3. Step 3: Cross multiply
    65,986.96x = 98,980.32 × 18,601.96
  4. Step 4: Simplify right side
    65,986.96x = 1,841,227,953.43
  5. Step 5: Solve for x
    x = 1,841,227,953.43/65,986.96
  6. Step 6: Final answer
    x = 27,902.91

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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.