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Finding the Fourth Proportional to 78,989.10, 108,989.84 and 44,996.85

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Solution

The fourth proportional to 78,989.10, 108,989.84 and 44,996.85 is: 62,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,989.10 : 108,989.84 = 44,996.85 : x
  2. Step 2: Convert to fraction form
    78,989.10/108,989.84 = 44,996.85/x
  3. Step 3: Cross multiply
    78,989.10x = 108,989.84 × 44,996.85
  4. Step 4: Simplify right side
    78,989.10x = 4,904,199,257.02
  5. Step 5: Solve for x
    x = 4,904,199,257.02/78,989.10
  6. Step 6: Final answer
    x = 62,087.04

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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.