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Finding the Fourth Proportional to 64,704.80, 89,292.30 and 36,410.70

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Solution

The fourth proportional to 64,704.80, 89,292.30 and 36,410.70 is: 50,246.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,704.80 : 89,292.30 = 36,410.70 : x
  2. Step 2: Convert to fraction form
    64,704.80/89,292.30 = 36,410.70/x
  3. Step 3: Cross multiply
    64,704.80x = 89,292.30 × 36,410.70
  4. Step 4: Simplify right side
    64,704.80x = 3,251,195,147.61
  5. Step 5: Solve for x
    x = 3,251,195,147.61/64,704.80
  6. Step 6: Final answer
    x = 50,246.58

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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.