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Finding the Fourth Proportional to 80,478, 111,059.64 and 44,673.80

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Solution

The fourth proportional to 80,478, 111,059.64 and 44,673.80 is: 61,649.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,478 : 111,059.64 = 44,673.80 : x
  2. Step 2: Convert to fraction form
    80,478/111,059.64 = 44,673.80/x
  3. Step 3: Cross multiply
    80,478x = 111,059.64 × 44,673.80
  4. Step 4: Simplify right side
    80,478x = 4,961,455,590.13
  5. Step 5: Solve for x
    x = 4,961,455,590.13/80,478
  6. Step 6: Final answer
    x = 61,649.84

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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.