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Finding the Fourth Proportional to 64,694.16, 89,272.80 and 36,404.64

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Solution

The fourth proportional to 64,694.16, 89,272.80 and 36,404.64 is: 50,235.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,694.16 : 89,272.80 = 36,404.64 : x
  2. Step 2: Convert to fraction form
    64,694.16/89,272.80 = 36,404.64/x
  3. Step 3: Cross multiply
    64,694.16x = 89,272.80 × 36,404.64
  4. Step 4: Simplify right side
    64,694.16x = 3,249,944,145.79
  5. Step 5: Solve for x
    x = 3,249,944,145.79/64,694.16
  6. Step 6: Final answer
    x = 50,235.51

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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.