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Finding the Fourth Proportional to 72,604.62, 100,189.44 and 40,776.48

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Solution

The fourth proportional to 72,604.62, 100,189.44 and 40,776.48 is: 56,268.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604.62 : 100,189.44 = 40,776.48 : x
  2. Step 2: Convert to fraction form
    72,604.62/100,189.44 = 40,776.48/x
  3. Step 3: Cross multiply
    72,604.62x = 100,189.44 × 40,776.48
  4. Step 4: Simplify right side
    72,604.62x = 4,085,372,696.37
  5. Step 5: Solve for x
    x = 4,085,372,696.37/72,604.62
  6. Step 6: Final answer
    x = 56,268.77

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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.