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Finding the Fourth Proportional to 78,965.82, 108,978.08 and 44,519.04

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Solution

The fourth proportional to 78,965.82, 108,978.08 and 44,519.04 is: 61,439.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,965.82 : 108,978.08 = 44,519.04 : x
  2. Step 2: Convert to fraction form
    78,965.82/108,978.08 = 44,519.04/x
  3. Step 3: Cross multiply
    78,965.82x = 108,978.08 × 44,519.04
  4. Step 4: Simplify right side
    78,965.82x = 4,851,599,502.64
  5. Step 5: Solve for x
    x = 4,851,599,502.64/78,965.82
  6. Step 6: Final answer
    x = 61,439.23

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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.