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Finding the Fourth Proportional to 80,278.68, 110,783.32 and 43,979.84

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Solution

The fourth proportional to 80,278.68, 110,783.32 and 43,979.84 is: 60,691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,278.68 : 110,783.32 = 43,979.84 : x
  2. Step 2: Convert to fraction form
    80,278.68/110,783.32 = 43,979.84/x
  3. Step 3: Cross multiply
    80,278.68x = 110,783.32 × 43,979.84
  4. Step 4: Simplify right side
    80,278.68x = 4,872,232,688.27
  5. Step 5: Solve for x
    x = 4,872,232,688.27/80,278.68
  6. Step 6: Final answer
    x = 60,691.49

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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.