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Finding the Fourth Proportional to 64,236.32, 88,646.72 and 38,744

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Solution

The fourth proportional to 64,236.32, 88,646.72 and 38,744 is: 53,467.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,236.32 : 88,646.72 = 38,744 : x
  2. Step 2: Convert to fraction form
    64,236.32/88,646.72 = 38,744/x
  3. Step 3: Cross multiply
    64,236.32x = 88,646.72 × 38,744
  4. Step 4: Simplify right side
    64,236.32x = 3,434,528,519.68
  5. Step 5: Solve for x
    x = 3,434,528,519.68/64,236.32
  6. Step 6: Final answer
    x = 53,467.08

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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.