Home / 69,155.10-103,680-31,725.81

Finding the Fourth Proportional to 69,155.10, 103,680 and 31,725.81

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Solution

The fourth proportional to 69,155.10, 103,680 and 31,725.81 is: 47,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,155.10 : 103,680 = 31,725.81 : x
  2. Step 2: Convert to fraction form
    69,155.10/103,680 = 31,725.81/x
  3. Step 3: Cross multiply
    69,155.10x = 103,680 × 31,725.81
  4. Step 4: Simplify right side
    69,155.10x = 3,289,331,980.80
  5. Step 5: Solve for x
    x = 3,289,331,980.80/69,155.10
  6. Step 6: Final answer
    x = 47,564.56

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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.