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Finding the Fourth Proportional to 34,690.86, 47,872.87 and 19,377.62

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Solution

The fourth proportional to 34,690.86, 47,872.87 and 19,377.62 is: 26,740.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,690.86 : 47,872.87 = 19,377.62 : x
  2. Step 2: Convert to fraction form
    34,690.86/47,872.87 = 19,377.62/x
  3. Step 3: Cross multiply
    34,690.86x = 47,872.87 × 19,377.62
  4. Step 4: Simplify right side
    34,690.86x = 927,662,306.72
  5. Step 5: Solve for x
    x = 927,662,306.72/34,690.86
  6. Step 6: Final answer
    x = 26,740.82

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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.