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Finding the Fourth Proportional to 80,039.85, 110,455.33 and 43,742.01

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Solution

The fourth proportional to 80,039.85, 110,455.33 and 43,742.01 is: 60,364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,039.85 : 110,455.33 = 43,742.01 : x
  2. Step 2: Convert to fraction form
    80,039.85/110,455.33 = 43,742.01/x
  3. Step 3: Cross multiply
    80,039.85x = 110,455.33 × 43,742.01
  4. Step 4: Simplify right side
    80,039.85x = 4,831,538,536.28
  5. Step 5: Solve for x
    x = 4,831,538,536.28/80,039.85
  6. Step 6: Final answer
    x = 60,364.17

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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.