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Finding the Fourth Proportional to 79,249.63, 109,362.76 and 43,438.87

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Solution

The fourth proportional to 79,249.63, 109,362.76 and 43,438.87 is: 59,944.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,249.63 : 109,362.76 = 43,438.87 : x
  2. Step 2: Convert to fraction form
    79,249.63/109,362.76 = 43,438.87/x
  3. Step 3: Cross multiply
    79,249.63x = 109,362.76 × 43,438.87
  4. Step 4: Simplify right side
    79,249.63x = 4,750,594,714.48
  5. Step 5: Solve for x
    x = 4,750,594,714.48/79,249.63
  6. Step 6: Final answer
    x = 59,944.69

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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.