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Finding the Fourth Proportional to 64,719.64, 89,311.62 and 36,425.08

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Solution

The fourth proportional to 64,719.64, 89,311.62 and 36,425.08 is: 50,265.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,719.64 : 89,311.62 = 36,425.08 : x
  2. Step 2: Convert to fraction form
    64,719.64/89,311.62 = 36,425.08/x
  3. Step 3: Cross multiply
    64,719.64x = 89,311.62 × 36,425.08
  4. Step 4: Simplify right side
    64,719.64x = 3,253,182,903.43
  5. Step 5: Solve for x
    x = 3,253,182,903.43/64,719.64
  6. Step 6: Final answer
    x = 50,265.78

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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.