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Finding the Fourth Proportional to 30,482.78, 45,725.45 and 10,761.44

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Solution

The fourth proportional to 30,482.78, 45,725.45 and 10,761.44 is: 16,142.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,482.78 : 45,725.45 = 10,761.44 : x
  2. Step 2: Convert to fraction form
    30,482.78/45,725.45 = 10,761.44/x
  3. Step 3: Cross multiply
    30,482.78x = 45,725.45 × 10,761.44
  4. Step 4: Simplify right side
    30,482.78x = 492,071,404.21
  5. Step 5: Solve for x
    x = 492,071,404.21/30,482.78
  6. Step 6: Final answer
    x = 16,142.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.