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Finding the Fourth Proportional to 72,605.79, 108,848.54 and 27,617.78

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Solution

The fourth proportional to 72,605.79, 108,848.54 and 27,617.78 is: 41,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,605.79 : 108,848.54 = 27,617.78 : x
  2. Step 2: Convert to fraction form
    72,605.79/108,848.54 = 27,617.78/x
  3. Step 3: Cross multiply
    72,605.79x = 108,848.54 × 27,617.78
  4. Step 4: Simplify right side
    72,605.79x = 3,006,155,372.21
  5. Step 5: Solve for x
    x = 3,006,155,372.21/72,605.79
  6. Step 6: Final answer
    x = 41,403.80

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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.