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Finding the Fourth Proportional to 73,419.40, 109,983.30 and 43,749.10

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Solution

The fourth proportional to 73,419.40, 109,983.30 and 43,749.10 is: 65,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,419.40 : 109,983.30 = 43,749.10 : x
  2. Step 2: Convert to fraction form
    73,419.40/109,983.30 = 43,749.10/x
  3. Step 3: Cross multiply
    73,419.40x = 109,983.30 × 43,749.10
  4. Step 4: Simplify right side
    73,419.40x = 4,811,670,390.03
  5. Step 5: Solve for x
    x = 4,811,670,390.03/73,419.40
  6. Step 6: Final answer
    x = 65,536.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.