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Finding the Fourth Proportional to 79,152.48, 109,239.84 and 47,338.56

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Solution

The fourth proportional to 79,152.48, 109,239.84 and 47,338.56 is: 65,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,152.48 : 109,239.84 = 47,338.56 : x
  2. Step 2: Convert to fraction form
    79,152.48/109,239.84 = 47,338.56/x
  3. Step 3: Cross multiply
    79,152.48x = 109,239.84 × 47,338.56
  4. Step 4: Simplify right side
    79,152.48x = 5,171,256,720.23
  5. Step 5: Solve for x
    x = 5,171,256,720.23/79,152.48
  6. Step 6: Final answer
    x = 65,332.85

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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.