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Finding the Fourth Proportional to 65,911.15, 90,963.92 and 37,621.09

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Solution

The fourth proportional to 65,911.15, 90,963.92 and 37,621.09 is: 51,920.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.15 : 90,963.92 = 37,621.09 : x
  2. Step 2: Convert to fraction form
    65,911.15/90,963.92 = 37,621.09/x
  3. Step 3: Cross multiply
    65,911.15x = 90,963.92 × 37,621.09
  4. Step 4: Simplify right side
    65,911.15x = 3,422,161,178.15
  5. Step 5: Solve for x
    x = 3,422,161,178.15/65,911.15
  6. Step 6: Final answer
    x = 51,920.83

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1.5x scale

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.