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Finding the Fourth Proportional to 36,703.58, 50,651.88 and 20,787.80

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Solution

The fourth proportional to 36,703.58, 50,651.88 and 20,787.80 is: 28,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,703.58 : 50,651.88 = 20,787.80 : x
  2. Step 2: Convert to fraction form
    36,703.58/50,651.88 = 20,787.80/x
  3. Step 3: Cross multiply
    36,703.58x = 50,651.88 × 20,787.80
  4. Step 4: Simplify right side
    36,703.58x = 1,052,941,151.06
  5. Step 5: Solve for x
    x = 1,052,941,151.06/36,703.58
  6. Step 6: Final answer
    x = 28,687.70

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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.