Home / 72,138.80-99,534.45-41,906.15

Finding the Fourth Proportional to 72,138.80, 99,534.45 and 41,906.15

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Solution

The fourth proportional to 72,138.80, 99,534.45 and 41,906.15 is: 57,820.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,138.80 : 99,534.45 = 41,906.15 : x
  2. Step 2: Convert to fraction form
    72,138.80/99,534.45 = 41,906.15/x
  3. Step 3: Cross multiply
    72,138.80x = 99,534.45 × 41,906.15
  4. Step 4: Simplify right side
    72,138.80x = 4,171,105,591.87
  5. Step 5: Solve for x
    x = 4,171,105,591.87/72,138.80
  6. Step 6: Final answer
    x = 57,820.56

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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.