Home / 40,091.76-60,121.64-12,382.32

Finding the Fourth Proportional to 40,091.76, 60,121.64 and 12,382.32

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Solution

The fourth proportional to 40,091.76, 60,121.64 and 12,382.32 is: 18,568.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,091.76 : 60,121.64 = 12,382.32 : x
  2. Step 2: Convert to fraction form
    40,091.76/60,121.64 = 12,382.32/x
  3. Step 3: Cross multiply
    40,091.76x = 60,121.64 × 12,382.32
  4. Step 4: Simplify right side
    40,091.76x = 744,445,385.40
  5. Step 5: Solve for x
    x = 744,445,385.40/40,091.76
  6. Step 6: Final answer
    x = 18,568.54

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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.