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Finding the Fourth Proportional to 50,321.34, 69,423.80 and 28,799.57

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Solution

The fourth proportional to 50,321.34, 69,423.80 and 28,799.57 is: 39,732.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,321.34 : 69,423.80 = 28,799.57 : x
  2. Step 2: Convert to fraction form
    50,321.34/69,423.80 = 28,799.57/x
  3. Step 3: Cross multiply
    50,321.34x = 69,423.80 × 28,799.57
  4. Step 4: Simplify right side
    50,321.34x = 1,999,375,617.33
  5. Step 5: Solve for x
    x = 1,999,375,617.33/50,321.34
  6. Step 6: Final answer
    x = 39,732.16

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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.