Home / 43,111.68-64,660.14-11,939.64

Finding the Fourth Proportional to 43,111.68, 64,660.14 and 11,939.64

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Solution

The fourth proportional to 43,111.68, 64,660.14 and 11,939.64 is: 17,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,111.68 : 64,660.14 = 11,939.64 : x
  2. Step 2: Convert to fraction form
    43,111.68/64,660.14 = 11,939.64/x
  3. Step 3: Cross multiply
    43,111.68x = 64,660.14 × 11,939.64
  4. Step 4: Simplify right side
    43,111.68x = 772,018,793.95
  5. Step 5: Solve for x
    x = 772,018,793.95/43,111.68
  6. Step 6: Final answer
    x = 17,907.42

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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.