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Finding the Fourth Proportional to 79,669.27, 109,706.48 and 77,901.22

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Solution

The fourth proportional to 79,669.27, 109,706.48 and 77,901.22 is: 107,271.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,669.27 : 109,706.48 = 77,901.22 : x
  2. Step 2: Convert to fraction form
    79,669.27/109,706.48 = 77,901.22/x
  3. Step 3: Cross multiply
    79,669.27x = 109,706.48 × 77,901.22
  4. Step 4: Simplify right side
    79,669.27x = 8,546,268,244.40
  5. Step 5: Solve for x
    x = 8,546,268,244.40/79,669.27
  6. Step 6: Final answer
    x = 107,271.83

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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.