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Finding the Fourth Proportional to 66,099.44, 91,396.62 and 65,031.14

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Solution

The fourth proportional to 66,099.44, 91,396.62 and 65,031.14 is: 89,919.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,099.44 : 91,396.62 = 65,031.14 : x
  2. Step 2: Convert to fraction form
    66,099.44/91,396.62 = 65,031.14/x
  3. Step 3: Cross multiply
    66,099.44x = 91,396.62 × 65,031.14
  4. Step 4: Simplify right side
    66,099.44x = 5,943,626,390.75
  5. Step 5: Solve for x
    x = 5,943,626,390.75/66,099.44
  6. Step 6: Final answer
    x = 89,919.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.