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Finding the Fourth Proportional to 72,125.49, 108,255.51 and 36,612.03

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Solution

The fourth proportional to 72,125.49, 108,255.51 and 36,612.03 is: 54,952.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,125.49 : 108,255.51 = 36,612.03 : x
  2. Step 2: Convert to fraction form
    72,125.49/108,255.51 = 36,612.03/x
  3. Step 3: Cross multiply
    72,125.49x = 108,255.51 × 36,612.03
  4. Step 4: Simplify right side
    72,125.49x = 3,963,453,979.79
  5. Step 5: Solve for x
    x = 3,963,453,979.79/72,125.49
  6. Step 6: Final answer
    x = 54,952.19

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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.