Home / 40,824.87-61,270.11-21,109.20

Finding the Fourth Proportional to 40,824.87, 61,270.11 and 21,109.20

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Solution

The fourth proportional to 40,824.87, 61,270.11 and 21,109.20 is: 31,680.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,824.87 : 61,270.11 = 21,109.20 : x
  2. Step 2: Convert to fraction form
    40,824.87/61,270.11 = 21,109.20/x
  3. Step 3: Cross multiply
    40,824.87x = 61,270.11 × 21,109.20
  4. Step 4: Simplify right side
    40,824.87x = 1,293,363,006.01
  5. Step 5: Solve for x
    x = 1,293,363,006.01/40,824.87
  6. Step 6: Final answer
    x = 31,680.76

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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.