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Finding the Fourth Proportional to 80,874.88, 111,478.08 and 53,964.16

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Solution

The fourth proportional to 80,874.88, 111,478.08 and 53,964.16 is: 74,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,874.88 : 111,478.08 = 53,964.16 : x
  2. Step 2: Convert to fraction form
    80,874.88/111,478.08 = 53,964.16/x
  3. Step 3: Cross multiply
    80,874.88x = 111,478.08 × 53,964.16
  4. Step 4: Simplify right side
    80,874.88x = 6,015,820,945.61
  5. Step 5: Solve for x
    x = 6,015,820,945.61/80,874.88
  6. Step 6: Final answer
    x = 74,384.30

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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.