Home / 83,822.28-115,701.90-53,688.72

Finding the Fourth Proportional to 83,822.28, 115,701.90 and 53,688.72

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Solution

The fourth proportional to 83,822.28, 115,701.90 and 53,688.72 is: 74,107.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,822.28 : 115,701.90 = 53,688.72 : x
  2. Step 2: Convert to fraction form
    83,822.28/115,701.90 = 53,688.72/x
  3. Step 3: Cross multiply
    83,822.28x = 115,701.90 × 53,688.72
  4. Step 4: Simplify right side
    83,822.28x = 6,211,886,912.57
  5. Step 5: Solve for x
    x = 6,211,886,912.57/83,822.28
  6. Step 6: Final answer
    x = 74,107.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.