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Finding the Fourth Proportional to 65,079.84, 89,809.92 and 36,399.54

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Solution

The fourth proportional to 65,079.84, 89,809.92 and 36,399.54 is: 50,231.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,079.84 : 89,809.92 = 36,399.54 : x
  2. Step 2: Convert to fraction form
    65,079.84/89,809.92 = 36,399.54/x
  3. Step 3: Cross multiply
    65,079.84x = 89,809.92 × 36,399.54
  4. Step 4: Simplify right side
    65,079.84x = 3,269,039,775.44
  5. Step 5: Solve for x
    x = 3,269,039,775.44/65,079.84
  6. Step 6: Final answer
    x = 50,231.22

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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.