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Finding the Fourth Proportional to 33,320.40, 49,915.80 and 18,502.80

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Solution

The fourth proportional to 33,320.40, 49,915.80 and 18,502.80 is: 27,718.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,320.40 : 49,915.80 = 18,502.80 : x
  2. Step 2: Convert to fraction form
    33,320.40/49,915.80 = 18,502.80/x
  3. Step 3: Cross multiply
    33,320.40x = 49,915.80 × 18,502.80
  4. Step 4: Simplify right side
    33,320.40x = 923,582,064.24
  5. Step 5: Solve for x
    x = 923,582,064.24/33,320.40
  6. Step 6: Final answer
    x = 27,718.22

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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.