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Finding the Fourth Proportional to 65,911.88, 90,963.06 and 37,621.82

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Solution

The fourth proportional to 65,911.88, 90,963.06 and 37,621.82 is: 51,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.88 : 90,963.06 = 37,621.82 : x
  2. Step 2: Convert to fraction form
    65,911.88/90,963.06 = 37,621.82/x
  3. Step 3: Cross multiply
    65,911.88x = 90,963.06 × 37,621.82
  4. Step 4: Simplify right side
    65,911.88x = 3,422,195,869.97
  5. Step 5: Solve for x
    x = 3,422,195,869.97/65,911.88
  6. Step 6: Final answer
    x = 51,920.77

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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.