Home / 72,540.82-100,108.32-40,711.69

Finding the Fourth Proportional to 72,540.82, 100,108.32 and 40,711.69

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Solution

The fourth proportional to 72,540.82, 100,108.32 and 40,711.69 is: 56,183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,540.82 : 100,108.32 = 40,711.69 : x
  2. Step 2: Convert to fraction form
    72,540.82/100,108.32 = 40,711.69/x
  3. Step 3: Cross multiply
    72,540.82x = 100,108.32 × 40,711.69
  4. Step 4: Simplify right side
    72,540.82x = 4,075,578,890.26
  5. Step 5: Solve for x
    x = 4,075,578,890.26/72,540.82
  6. Step 6: Final answer
    x = 56,183.25

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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.