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Finding the Fourth Proportional to 79,705.62, 109,989.50 and 43,888.64

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Solution

The fourth proportional to 79,705.62, 109,989.50 and 43,888.64 is: 60,563.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,705.62 : 109,989.50 = 43,888.64 : x
  2. Step 2: Convert to fraction form
    79,705.62/109,989.50 = 43,888.64/x
  3. Step 3: Cross multiply
    79,705.62x = 109,989.50 × 43,888.64
  4. Step 4: Simplify right side
    79,705.62x = 4,827,288,799.89
  5. Step 5: Solve for x
    x = 4,827,288,799.89/79,705.62
  6. Step 6: Final answer
    x = 60,563.97

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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.