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Finding the Fourth Proportional to 67,239.56, 100,835.81 and 19,842.08

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Solution

The fourth proportional to 67,239.56, 100,835.81 and 19,842.08 is: 29,756.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,239.56 : 100,835.81 = 19,842.08 : x
  2. Step 2: Convert to fraction form
    67,239.56/100,835.81 = 19,842.08/x
  3. Step 3: Cross multiply
    67,239.56x = 100,835.81 × 19,842.08
  4. Step 4: Simplify right side
    67,239.56x = 2,000,791,704.71
  5. Step 5: Solve for x
    x = 2,000,791,704.71/67,239.56
  6. Step 6: Final answer
    x = 29,756.17

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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.