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Finding the Fourth Proportional to 65,015.65, 89,720.22 and 36,335.58

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Solution

The fourth proportional to 65,015.65, 89,720.22 and 36,335.58 is: 50,142.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,015.65 : 89,720.22 = 36,335.58 : x
  2. Step 2: Convert to fraction form
    65,015.65/89,720.22 = 36,335.58/x
  3. Step 3: Cross multiply
    65,015.65x = 89,720.22 × 36,335.58
  4. Step 4: Simplify right side
    65,015.65x = 3,260,036,231.43
  5. Step 5: Solve for x
    x = 3,260,036,231.43/65,015.65
  6. Step 6: Final answer
    x = 50,142.33

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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.