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Finding the Fourth Proportional to 78,768.05, 108,706.41 and 44,787.20

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Solution

The fourth proportional to 78,768.05, 108,706.41 and 44,787.20 is: 61,810.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,768.05 : 108,706.41 = 44,787.20 : x
  2. Step 2: Convert to fraction form
    78,768.05/108,706.41 = 44,787.20/x
  3. Step 3: Cross multiply
    78,768.05x = 108,706.41 × 44,787.20
  4. Step 4: Simplify right side
    78,768.05x = 4,868,655,182.42
  5. Step 5: Solve for x
    x = 4,868,655,182.42/78,768.05
  6. Step 6: Final answer
    x = 61,810.03

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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.