Home / 72,439.65-108,690.71-39,183.12

Finding the Fourth Proportional to 72,439.65, 108,690.71 and 39,183.12

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Solution

The fourth proportional to 72,439.65, 108,690.71 and 39,183.12 is: 58,791.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439.65 : 108,690.71 = 39,183.12 : x
  2. Step 2: Convert to fraction form
    72,439.65/108,690.71 = 39,183.12/x
  3. Step 3: Cross multiply
    72,439.65x = 108,690.71 × 39,183.12
  4. Step 4: Simplify right side
    72,439.65x = 4,258,840,936.90
  5. Step 5: Solve for x
    x = 4,258,840,936.90/72,439.65
  6. Step 6: Final answer
    x = 58,791.57

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1.5x scale

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.