Home / 40,111.78-60,222.88-20,403.66

Finding the Fourth Proportional to 40,111.78, 60,222.88 and 20,403.66

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Solution

The fourth proportional to 40,111.78, 60,222.88 and 20,403.66 is: 30,633.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,111.78 : 60,222.88 = 20,403.66 : x
  2. Step 2: Convert to fraction form
    40,111.78/60,222.88 = 20,403.66/x
  3. Step 3: Cross multiply
    40,111.78x = 60,222.88 × 20,403.66
  4. Step 4: Simplify right side
    40,111.78x = 1,228,767,167.74
  5. Step 5: Solve for x
    x = 1,228,767,167.74/40,111.78
  6. Step 6: Final answer
    x = 30,633.57

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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.