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Finding the Fourth Proportional to 36,700.64, 50,630.52 and 21,788

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Solution

The fourth proportional to 36,700.64, 50,630.52 and 21,788 is: 30,057.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,700.64 : 50,630.52 = 21,788 : x
  2. Step 2: Convert to fraction form
    36,700.64/50,630.52 = 21,788/x
  3. Step 3: Cross multiply
    36,700.64x = 50,630.52 × 21,788
  4. Step 4: Simplify right side
    36,700.64x = 1,103,137,769.76
  5. Step 5: Solve for x
    x = 1,103,137,769.76/36,700.64
  6. Step 6: Final answer
    x = 30,057.73

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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.