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Finding the Fourth Proportional to 72,222.44, 108,333.34 and 19,631.77

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Solution

The fourth proportional to 72,222.44, 108,333.34 and 19,631.77 is: 29,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,222.44 : 108,333.34 = 19,631.77 : x
  2. Step 2: Convert to fraction form
    72,222.44/108,333.34 = 19,631.77/x
  3. Step 3: Cross multiply
    72,222.44x = 108,333.34 × 19,631.77
  4. Step 4: Simplify right side
    72,222.44x = 2,126,774,894.30
  5. Step 5: Solve for x
    x = 2,126,774,894.30/72,222.44
  6. Step 6: Final answer
    x = 29,447.57

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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.