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Finding the Fourth Proportional to 64,743.30, 89,345.43 and 36,449.19

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Solution

The fourth proportional to 64,743.30, 89,345.43 and 36,449.19 is: 50,299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,743.30 : 89,345.43 = 36,449.19 : x
  2. Step 2: Convert to fraction form
    64,743.30/89,345.43 = 36,449.19/x
  3. Step 3: Cross multiply
    64,743.30x = 89,345.43 × 36,449.19
  4. Step 4: Simplify right side
    64,743.30x = 3,256,568,553.70
  5. Step 5: Solve for x
    x = 3,256,568,553.70/64,743.30
  6. Step 6: Final answer
    x = 50,299.70

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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.