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Finding the Fourth Proportional to 50,676.12, 69,893.10 and 47,280.78

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Solution

The fourth proportional to 50,676.12, 69,893.10 and 47,280.78 is: 65,210.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,676.12 : 69,893.10 = 47,280.78 : x
  2. Step 2: Convert to fraction form
    50,676.12/69,893.10 = 47,280.78/x
  3. Step 3: Cross multiply
    50,676.12x = 69,893.10 × 47,280.78
  4. Step 4: Simplify right side
    50,676.12x = 3,304,600,284.62
  5. Step 5: Solve for x
    x = 3,304,600,284.62/50,676.12
  6. Step 6: Final answer
    x = 65,210.21

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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.