Home / 40,906.20-61,359.30-21,223.20

Finding the Fourth Proportional to 40,906.20, 61,359.30 and 21,223.20

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Solution

The fourth proportional to 40,906.20, 61,359.30 and 21,223.20 is: 31,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,906.20 : 61,359.30 = 21,223.20 : x
  2. Step 2: Convert to fraction form
    40,906.20/61,359.30 = 21,223.20/x
  3. Step 3: Cross multiply
    40,906.20x = 61,359.30 × 21,223.20
  4. Step 4: Simplify right side
    40,906.20x = 1,302,240,695.76
  5. Step 5: Solve for x
    x = 1,302,240,695.76/40,906.20
  6. Step 6: Final answer
    x = 31,834.80

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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.