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Finding the Fourth Proportional to 72,604.50, 108,804.60 and 57,747.48

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Solution

The fourth proportional to 72,604.50, 108,804.60 and 57,747.48 is: 86,539.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604.50 : 108,804.60 = 57,747.48 : x
  2. Step 2: Convert to fraction form
    72,604.50/108,804.60 = 57,747.48/x
  3. Step 3: Cross multiply
    72,604.50x = 108,804.60 × 57,747.48
  4. Step 4: Simplify right side
    72,604.50x = 6,283,191,462.41
  5. Step 5: Solve for x
    x = 6,283,191,462.41/72,604.50
  6. Step 6: Final answer
    x = 86,539.97

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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.