Home / 55,283.11-82,916.16-20,214.56

Finding the Fourth Proportional to 55,283.11, 82,916.16 and 20,214.56

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Solution

The fourth proportional to 55,283.11, 82,916.16 and 20,214.56 is: 30,318.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,283.11 : 82,916.16 = 20,214.56 : x
  2. Step 2: Convert to fraction form
    55,283.11/82,916.16 = 20,214.56/x
  3. Step 3: Cross multiply
    55,283.11x = 82,916.16 × 20,214.56
  4. Step 4: Simplify right side
    55,283.11x = 1,676,113,822.78
  5. Step 5: Solve for x
    x = 1,676,113,822.78/55,283.11
  6. Step 6: Final answer
    x = 30,318.73

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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.