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Finding the Fourth Proportional to 36,487, 50,352.06 and 19,720

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Solution

The fourth proportional to 36,487, 50,352.06 and 19,720 is: 27,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,487 : 50,352.06 = 19,720 : x
  2. Step 2: Convert to fraction form
    36,487/50,352.06 = 19,720/x
  3. Step 3: Cross multiply
    36,487x = 50,352.06 × 19,720
  4. Step 4: Simplify right side
    36,487x = 992,942,623.20
  5. Step 5: Solve for x
    x = 992,942,623.20/36,487
  6. Step 6: Final answer
    x = 27,213.60

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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.