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Finding the Fourth Proportional to 64,390.23, 88,863.63 and 35,712.72

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Solution

The fourth proportional to 64,390.23, 88,863.63 and 35,712.72 is: 49,286.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,390.23 : 88,863.63 = 35,712.72 : x
  2. Step 2: Convert to fraction form
    64,390.23/88,863.63 = 35,712.72/x
  3. Step 3: Cross multiply
    64,390.23x = 88,863.63 × 35,712.72
  4. Step 4: Simplify right side
    64,390.23x = 3,173,561,936.37
  5. Step 5: Solve for x
    x = 3,173,561,936.37/64,390.23
  6. Step 6: Final answer
    x = 49,286.39

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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.