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Finding the Fourth Proportional to 66,439.65, 99,679.60 and 23,739.49

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Solution

The fourth proportional to 66,439.65, 99,679.60 and 23,739.49 is: 35,616.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,439.65 : 99,679.60 = 23,739.49 : x
  2. Step 2: Convert to fraction form
    66,439.65/99,679.60 = 23,739.49/x
  3. Step 3: Cross multiply
    66,439.65x = 99,679.60 × 23,739.49
  4. Step 4: Simplify right side
    66,439.65x = 2,366,342,748.71
  5. Step 5: Solve for x
    x = 2,366,342,748.71/66,439.65
  6. Step 6: Final answer
    x = 35,616.42

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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.