Home / 71,644.70-98,867.18-39,811.50

Finding the Fourth Proportional to 71,644.70, 98,867.18 and 39,811.50

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Solution

The fourth proportional to 71,644.70, 98,867.18 and 39,811.50 is: 54,938.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,644.70 : 98,867.18 = 39,811.50 : x
  2. Step 2: Convert to fraction form
    71,644.70/98,867.18 = 39,811.50/x
  3. Step 3: Cross multiply
    71,644.70x = 98,867.18 × 39,811.50
  4. Step 4: Simplify right side
    71,644.70x = 3,936,050,836.10
  5. Step 5: Solve for x
    x = 3,936,050,836.10/71,644.70
  6. Step 6: Final answer
    x = 54,938.48

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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.