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Finding the Fourth Proportional to 78,893.39, 108,878.72 and 44,912.88

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Solution

The fourth proportional to 78,893.39, 108,878.72 and 44,912.88 is: 61,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,893.39 : 108,878.72 = 44,912.88 : x
  2. Step 2: Convert to fraction form
    78,893.39/108,878.72 = 44,912.88/x
  3. Step 3: Cross multiply
    78,893.39x = 108,878.72 × 44,912.88
  4. Step 4: Simplify right side
    78,893.39x = 4,890,056,661.35
  5. Step 5: Solve for x
    x = 4,890,056,661.35/78,893.39
  6. Step 6: Final answer
    x = 61,983.10

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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.