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Finding the Fourth Proportional to 79,079.42, 109,118.85 and 47,241.56

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Solution

The fourth proportional to 79,079.42, 109,118.85 and 47,241.56 is: 65,186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,079.42 : 109,118.85 = 47,241.56 : x
  2. Step 2: Convert to fraction form
    79,079.42/109,118.85 = 47,241.56/x
  3. Step 3: Cross multiply
    79,079.42x = 109,118.85 × 47,241.56
  4. Step 4: Simplify right side
    79,079.42x = 5,154,944,795.05
  5. Step 5: Solve for x
    x = 5,154,944,795.05/79,079.42
  6. Step 6: Final answer
    x = 65,186.93

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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.