Home / 67,145.32-100,659.66-39,385

Finding the Fourth Proportional to 67,145.32, 100,659.66 and 39,385

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Solution

The fourth proportional to 67,145.32, 100,659.66 and 39,385 is: 59,043.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,145.32 : 100,659.66 = 39,385 : x
  2. Step 2: Convert to fraction form
    67,145.32/100,659.66 = 39,385/x
  3. Step 3: Cross multiply
    67,145.32x = 100,659.66 × 39,385
  4. Step 4: Simplify right side
    67,145.32x = 3,964,480,709.10
  5. Step 5: Solve for x
    x = 3,964,480,709.10/67,145.32
  6. Step 6: Final answer
    x = 59,043.29

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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.