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Finding the Fourth Proportional to 36,290.88, 50,080.13 and 20,376

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Solution

The fourth proportional to 36,290.88, 50,080.13 and 20,376 is: 28,118.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,290.88 : 50,080.13 = 20,376 : x
  2. Step 2: Convert to fraction form
    36,290.88/50,080.13 = 20,376/x
  3. Step 3: Cross multiply
    36,290.88x = 50,080.13 × 20,376
  4. Step 4: Simplify right side
    36,290.88x = 1,020,432,728.88
  5. Step 5: Solve for x
    x = 1,020,432,728.88/36,290.88
  6. Step 6: Final answer
    x = 28,118.16

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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.