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Finding the Fourth Proportional to 65,019.92, 89,719.92 and 36,339.64

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Solution

The fourth proportional to 65,019.92, 89,719.92 and 36,339.64 is: 50,144.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,019.92 : 89,719.92 = 36,339.64 : x
  2. Step 2: Convert to fraction form
    65,019.92/89,719.92 = 36,339.64/x
  3. Step 3: Cross multiply
    65,019.92x = 89,719.92 × 36,339.64
  4. Step 4: Simplify right side
    65,019.92x = 3,260,389,145.03
  5. Step 5: Solve for x
    x = 3,260,389,145.03/65,019.92
  6. Step 6: Final answer
    x = 50,144.47

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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.