Home / 42,940.68-64,410.24-11,775.88

Finding the Fourth Proportional to 42,940.68, 64,410.24 and 11,775.88

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Solution

The fourth proportional to 42,940.68, 64,410.24 and 11,775.88 is: 17,663.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,940.68 : 64,410.24 = 11,775.88 : x
  2. Step 2: Convert to fraction form
    42,940.68/64,410.24 = 11,775.88/x
  3. Step 3: Cross multiply
    42,940.68x = 64,410.24 × 11,775.88
  4. Step 4: Simplify right side
    42,940.68x = 758,487,257.01
  5. Step 5: Solve for x
    x = 758,487,257.01/42,940.68
  6. Step 6: Final answer
    x = 17,663.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.