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Finding the Fourth Proportional to 79,725.80, 110,020.26 and 43,919.16

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Solution

The fourth proportional to 79,725.80, 110,020.26 and 43,919.16 is: 60,607.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,725.80 : 110,020.26 = 43,919.16 : x
  2. Step 2: Convert to fraction form
    79,725.80/110,020.26 = 43,919.16/x
  3. Step 3: Cross multiply
    79,725.80x = 110,020.26 × 43,919.16
  4. Step 4: Simplify right side
    79,725.80x = 4,831,997,402.18
  5. Step 5: Solve for x
    x = 4,831,997,402.18/79,725.80
  6. Step 6: Final answer
    x = 60,607.70

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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.