Home / 72,140.56-108,199.90-25,382.50

Finding the Fourth Proportional to 72,140.56, 108,199.90 and 25,382.50

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Solution

The fourth proportional to 72,140.56, 108,199.90 and 25,382.50 is: 38,069.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,140.56 : 108,199.90 = 25,382.50 : x
  2. Step 2: Convert to fraction form
    72,140.56/108,199.90 = 25,382.50/x
  3. Step 3: Cross multiply
    72,140.56x = 108,199.90 × 25,382.50
  4. Step 4: Simplify right side
    72,140.56x = 2,746,383,961.75
  5. Step 5: Solve for x
    x = 2,746,383,961.75/72,140.56
  6. Step 6: Final answer
    x = 38,069.90

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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.