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Finding the Fourth Proportional to 72,944.70, 100,660.77 and 41,120.21

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Solution

The fourth proportional to 72,944.70, 100,660.77 and 41,120.21 is: 56,744.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,944.70 : 100,660.77 = 41,120.21 : x
  2. Step 2: Convert to fraction form
    72,944.70/100,660.77 = 41,120.21/x
  3. Step 3: Cross multiply
    72,944.70x = 100,660.77 × 41,120.21
  4. Step 4: Simplify right side
    72,944.70x = 4,139,192,001.16
  5. Step 5: Solve for x
    x = 4,139,192,001.16/72,944.70
  6. Step 6: Final answer
    x = 56,744.25

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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.