Home / 72,467.12-100,005.66-43,782.80

Finding the Fourth Proportional to 72,467.12, 100,005.66 and 43,782.80

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Solution

The fourth proportional to 72,467.12, 100,005.66 and 43,782.80 is: 60,420.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,467.12 : 100,005.66 = 43,782.80 : x
  2. Step 2: Convert to fraction form
    72,467.12/100,005.66 = 43,782.80/x
  3. Step 3: Cross multiply
    72,467.12x = 100,005.66 × 43,782.80
  4. Step 4: Simplify right side
    72,467.12x = 4,378,527,310.62
  5. Step 5: Solve for x
    x = 4,378,527,310.62/72,467.12
  6. Step 6: Final answer
    x = 60,420.88

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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.