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Finding the Fourth Proportional to 72,358.86, 108,536.85 and 19,772.94

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Solution

The fourth proportional to 72,358.86, 108,536.85 and 19,772.94 is: 29,659.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,358.86 : 108,536.85 = 19,772.94 : x
  2. Step 2: Convert to fraction form
    72,358.86/108,536.85 = 19,772.94/x
  3. Step 3: Cross multiply
    72,358.86x = 108,536.85 × 19,772.94
  4. Step 4: Simplify right side
    72,358.86x = 2,146,092,622.84
  5. Step 5: Solve for x
    x = 2,146,092,622.84/72,358.86
  6. Step 6: Final answer
    x = 29,659.02

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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.