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Finding the Fourth Proportional to 78,880.56, 108,859.60 and 43,073.90

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Solution

The fourth proportional to 78,880.56, 108,859.60 and 43,073.90 is: 59,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,880.56 : 108,859.60 = 43,073.90 : x
  2. Step 2: Convert to fraction form
    78,880.56/108,859.60 = 43,073.90/x
  3. Step 3: Cross multiply
    78,880.56x = 108,859.60 × 43,073.90
  4. Step 4: Simplify right side
    78,880.56x = 4,689,007,524.44
  5. Step 5: Solve for x
    x = 4,689,007,524.44/78,880.56
  6. Step 6: Final answer
    x = 59,444.40

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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.