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Finding the Fourth Proportional to 79,203.36, 109,314.72 and 47,375.76

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Solution

The fourth proportional to 79,203.36, 109,314.72 and 47,375.76 is: 65,386.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,203.36 : 109,314.72 = 47,375.76 : x
  2. Step 2: Convert to fraction form
    79,203.36/109,314.72 = 47,375.76/x
  3. Step 3: Cross multiply
    79,203.36x = 109,314.72 × 47,375.76
  4. Step 4: Simplify right side
    79,203.36x = 5,178,867,939.19
  5. Step 5: Solve for x
    x = 5,178,867,939.19/79,203.36
  6. Step 6: Final answer
    x = 65,386.97

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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.