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Finding the Fourth Proportional to 50,689.62, 69,951.11 and 28,029.11

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Solution

The fourth proportional to 50,689.62, 69,951.11 and 28,029.11 is: 38,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,689.62 : 69,951.11 = 28,029.11 : x
  2. Step 2: Convert to fraction form
    50,689.62/69,951.11 = 28,029.11/x
  3. Step 3: Cross multiply
    50,689.62x = 69,951.11 × 28,029.11
  4. Step 4: Simplify right side
    50,689.62x = 1,960,666,866.91
  5. Step 5: Solve for x
    x = 1,960,666,866.91/50,689.62
  6. Step 6: Final answer
    x = 38,679.85

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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.