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Finding the Fourth Proportional to 79,878, 110,231.64 and 44,550

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Solution

The fourth proportional to 79,878, 110,231.64 and 44,550 is: 61,479

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,878 : 110,231.64 = 44,550 : x
  2. Step 2: Convert to fraction form
    79,878/110,231.64 = 44,550/x
  3. Step 3: Cross multiply
    79,878x = 110,231.64 × 44,550
  4. Step 4: Simplify right side
    79,878x = 4,910,819,562
  5. Step 5: Solve for x
    x = 4,910,819,562/79,878
  6. Step 6: Final answer
    x = 61,479

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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.