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Finding the Fourth Proportional to 80,385.44, 110,931.78 and 48,548.42

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Solution

The fourth proportional to 80,385.44, 110,931.78 and 48,548.42 is: 66,996.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,385.44 : 110,931.78 = 48,548.42 : x
  2. Step 2: Convert to fraction form
    80,385.44/110,931.78 = 48,548.42/x
  3. Step 3: Cross multiply
    80,385.44x = 110,931.78 × 48,548.42
  4. Step 4: Simplify right side
    80,385.44x = 5,385,562,646.79
  5. Step 5: Solve for x
    x = 5,385,562,646.79/80,385.44
  6. Step 6: Final answer
    x = 66,996.74

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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.