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Finding the Fourth Proportional to 30,103.89, 44,972.74 and 19,487.42

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Solution

The fourth proportional to 30,103.89, 44,972.74 and 19,487.42 is: 29,112.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,103.89 : 44,972.74 = 19,487.42 : x
  2. Step 2: Convert to fraction form
    30,103.89/44,972.74 = 19,487.42/x
  3. Step 3: Cross multiply
    30,103.89x = 44,972.74 × 19,487.42
  4. Step 4: Simplify right side
    30,103.89x = 876,402,761.94
  5. Step 5: Solve for x
    x = 876,402,761.94/30,103.89
  6. Step 6: Final answer
    x = 29,112.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.