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Finding the Fourth Proportional to 80,808, 111,515.04 and 47,280.48

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Solution

The fourth proportional to 80,808, 111,515.04 and 47,280.48 is: 65,247.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,808 : 111,515.04 = 47,280.48 : x
  2. Step 2: Convert to fraction form
    80,808/111,515.04 = 47,280.48/x
  3. Step 3: Cross multiply
    80,808x = 111,515.04 × 47,280.48
  4. Step 4: Simplify right side
    80,808x = 5,272,484,618.42
  5. Step 5: Solve for x
    x = 5,272,484,618.42/80,808
  6. Step 6: Final answer
    x = 65,247.06

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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.