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Finding the Fourth Proportional to 65,687.71, 89,992.49 and 63,227.69

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Solution

The fourth proportional to 65,687.71, 89,992.49 and 63,227.69 is: 86,622.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,687.71 : 89,992.49 = 63,227.69 : x
  2. Step 2: Convert to fraction form
    65,687.71/89,992.49 = 63,227.69/x
  3. Step 3: Cross multiply
    65,687.71x = 89,992.49 × 63,227.69
  4. Step 4: Simplify right side
    65,687.71x = 5,690,017,260.05
  5. Step 5: Solve for x
    x = 5,690,017,260.05/65,687.71
  6. Step 6: Final answer
    x = 86,622.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.