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Finding the Fourth Proportional to 72,241.47, 108,351.27 and 19,655.06

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Solution

The fourth proportional to 72,241.47, 108,351.27 and 19,655.06 is: 29,479.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,241.47 : 108,351.27 = 19,655.06 : x
  2. Step 2: Convert to fraction form
    72,241.47/108,351.27 = 19,655.06/x
  3. Step 3: Cross multiply
    72,241.47x = 108,351.27 × 19,655.06
  4. Step 4: Simplify right side
    72,241.47x = 2,129,650,171.17
  5. Step 5: Solve for x
    x = 2,129,650,171.17/72,241.47
  6. Step 6: Final answer
    x = 29,479.61

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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.