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Finding the Fourth Proportional to 65,640.42, 98,455.83 and 25,651.89

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Solution

The fourth proportional to 65,640.42, 98,455.83 and 25,651.89 is: 38,475.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,640.42 : 98,455.83 = 25,651.89 : x
  2. Step 2: Convert to fraction form
    65,640.42/98,455.83 = 25,651.89/x
  3. Step 3: Cross multiply
    65,640.42x = 98,455.83 × 25,651.89
  4. Step 4: Simplify right side
    65,640.42x = 2,525,578,121.02
  5. Step 5: Solve for x
    x = 2,525,578,121.02/65,640.42
  6. Step 6: Final answer
    x = 38,475.96

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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.