Home / 78,956.35-108,960.05-43,146.36

Finding the Fourth Proportional to 78,956.35, 108,960.05 and 43,146.36

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Solution

The fourth proportional to 78,956.35, 108,960.05 and 43,146.36 is: 59,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,956.35 : 108,960.05 = 43,146.36 : x
  2. Step 2: Convert to fraction form
    78,956.35/108,960.05 = 43,146.36/x
  3. Step 3: Cross multiply
    78,956.35x = 108,960.05 × 43,146.36
  4. Step 4: Simplify right side
    78,956.35x = 4,701,229,542.92
  5. Step 5: Solve for x
    x = 4,701,229,542.92/78,956.35
  6. Step 6: Final answer
    x = 59,542.13

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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.