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Finding the Fourth Proportional to 72,601.79, 108,878.10 and 27,612.45

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Solution

The fourth proportional to 72,601.79, 108,878.10 and 27,612.45 is: 41,409.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,601.79 : 108,878.10 = 27,612.45 : x
  2. Step 2: Convert to fraction form
    72,601.79/108,878.10 = 27,612.45/x
  3. Step 3: Cross multiply
    72,601.79x = 108,878.10 × 27,612.45
  4. Step 4: Simplify right side
    72,601.79x = 3,006,391,092.35
  5. Step 5: Solve for x
    x = 3,006,391,092.35/72,601.79
  6. Step 6: Final answer
    x = 41,409.33

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1.5x scale

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.