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Finding the Fourth Proportional to 80,212.78, 110,722.80 and 46,678.78

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Solution

The fourth proportional to 80,212.78, 110,722.80 and 46,678.78 is: 64,433.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,212.78 : 110,722.80 = 46,678.78 : x
  2. Step 2: Convert to fraction form
    80,212.78/110,722.80 = 46,678.78/x
  3. Step 3: Cross multiply
    80,212.78x = 110,722.80 × 46,678.78
  4. Step 4: Simplify right side
    80,212.78x = 5,168,405,222.18
  5. Step 5: Solve for x
    x = 5,168,405,222.18/80,212.78
  6. Step 6: Final answer
    x = 64,433.69

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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.