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Finding the Fourth Proportional to 79,266, 109,387.08 and 47,439.48

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Solution

The fourth proportional to 79,266, 109,387.08 and 47,439.48 is: 65,466.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,266 : 109,387.08 = 47,439.48 : x
  2. Step 2: Convert to fraction form
    79,266/109,387.08 = 47,439.48/x
  3. Step 3: Cross multiply
    79,266x = 109,387.08 × 47,439.48
  4. Step 4: Simplify right side
    79,266x = 5,189,266,193.92
  5. Step 5: Solve for x
    x = 5,189,266,193.92/79,266
  6. Step 6: Final answer
    x = 65,466.48

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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.