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Finding the Fourth Proportional to 79,722.93, 109,995.54 and 55,496.64

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Solution

The fourth proportional to 79,722.93, 109,995.54 and 55,496.64 is: 76,569.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,722.93 : 109,995.54 = 55,496.64 : x
  2. Step 2: Convert to fraction form
    79,722.93/109,995.54 = 55,496.64/x
  3. Step 3: Cross multiply
    79,722.93x = 109,995.54 × 55,496.64
  4. Step 4: Simplify right side
    79,722.93x = 6,104,383,089.36
  5. Step 5: Solve for x
    x = 6,104,383,089.36/79,722.93
  6. Step 6: Final answer
    x = 76,569.98

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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.