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Finding the Fourth Proportional to 36,136.49, 49,871.08 and 20,220.60

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Solution

The fourth proportional to 36,136.49, 49,871.08 and 20,220.60 is: 27,905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,136.49 : 49,871.08 = 20,220.60 : x
  2. Step 2: Convert to fraction form
    36,136.49/49,871.08 = 20,220.60/x
  3. Step 3: Cross multiply
    36,136.49x = 49,871.08 × 20,220.60
  4. Step 4: Simplify right side
    36,136.49x = 1,008,423,160.25
  5. Step 5: Solve for x
    x = 1,008,423,160.25/36,136.49
  6. Step 6: Final answer
    x = 27,905.95

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1.5x scale

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.