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Finding the Fourth Proportional to 80,211.78, 110,721.42 and 46,677.78

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Solution

The fourth proportional to 80,211.78, 110,721.42 and 46,677.78 is: 64,432.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,211.78 : 110,721.42 = 46,677.78 : x
  2. Step 2: Convert to fraction form
    80,211.78/110,721.42 = 46,677.78/x
  3. Step 3: Cross multiply
    80,211.78x = 110,721.42 × 46,677.78
  4. Step 4: Simplify right side
    80,211.78x = 5,168,230,084.05
  5. Step 5: Solve for x
    x = 5,168,230,084.05/80,211.78
  6. Step 6: Final answer
    x = 64,432.31

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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.