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Finding the Fourth Proportional to 72,625.38, 100,242.08 and 40,804.54

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Solution

The fourth proportional to 72,625.38, 100,242.08 and 40,804.54 is: 56,320.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,625.38 : 100,242.08 = 40,804.54 : x
  2. Step 2: Convert to fraction form
    72,625.38/100,242.08 = 40,804.54/x
  3. Step 3: Cross multiply
    72,625.38x = 100,242.08 × 40,804.54
  4. Step 4: Simplify right side
    72,625.38x = 4,090,331,963.04
  5. Step 5: Solve for x
    x = 4,090,331,963.04/72,625.38
  6. Step 6: Final answer
    x = 56,320.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.