Home / 55,161.06-82,783.17-40,407.72

Finding the Fourth Proportional to 55,161.06, 82,783.17 and 40,407.72

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Solution

The fourth proportional to 55,161.06, 82,783.17 and 40,407.72 is: 60,642.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,161.06 : 82,783.17 = 40,407.72 : x
  2. Step 2: Convert to fraction form
    55,161.06/82,783.17 = 40,407.72/x
  3. Step 3: Cross multiply
    55,161.06x = 82,783.17 × 40,407.72
  4. Step 4: Simplify right side
    55,161.06x = 3,345,079,154.07
  5. Step 5: Solve for x
    x = 3,345,079,154.07/55,161.06
  6. Step 6: Final answer
    x = 60,642.04

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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.