Home / 40,110.78-60,221.38-20,402.66

Finding the Fourth Proportional to 40,110.78, 60,221.38 and 20,402.66

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Solution

The fourth proportional to 40,110.78, 60,221.38 and 20,402.66 is: 30,632.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,110.78 : 60,221.38 = 20,402.66 : x
  2. Step 2: Convert to fraction form
    40,110.78/60,221.38 = 20,402.66/x
  3. Step 3: Cross multiply
    40,110.78x = 60,221.38 × 20,402.66
  4. Step 4: Simplify right side
    40,110.78x = 1,228,676,340.87
  5. Step 5: Solve for x
    x = 1,228,676,340.87/40,110.78
  6. Step 6: Final answer
    x = 30,632.07

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1.5x scale

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.