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Finding the Fourth Proportional to 65,661.42, 90,616.66 and 37,367.30

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Solution

The fourth proportional to 65,661.42, 90,616.66 and 37,367.30 is: 51,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,661.42 : 90,616.66 = 37,367.30 : x
  2. Step 2: Convert to fraction form
    65,661.42/90,616.66 = 37,367.30/x
  3. Step 3: Cross multiply
    65,661.42x = 90,616.66 × 37,367.30
  4. Step 4: Simplify right side
    65,661.42x = 3,386,099,919.22
  5. Step 5: Solve for x
    x = 3,386,099,919.22/65,661.42
  6. Step 6: Final answer
    x = 51,569.09

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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.