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Finding the Fourth Proportional to 79,222, 109,326.36 and 47,392.24

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Solution

The fourth proportional to 79,222, 109,326.36 and 47,392.24 is: 65,401.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,222 : 109,326.36 = 47,392.24 : x
  2. Step 2: Convert to fraction form
    79,222/109,326.36 = 47,392.24/x
  3. Step 3: Cross multiply
    79,222x = 109,326.36 × 47,392.24
  4. Step 4: Simplify right side
    79,222x = 5,181,221,091.45
  5. Step 5: Solve for x
    x = 5,181,221,091.45/79,222
  6. Step 6: Final answer
    x = 65,401.29

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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.