Home / 78,975.92-108,989.70-43,168.34

Finding the Fourth Proportional to 78,975.92, 108,989.70 and 43,168.34

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Solution

The fourth proportional to 78,975.92, 108,989.70 and 43,168.34 is: 59,573.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,975.92 : 108,989.70 = 43,168.34 : x
  2. Step 2: Convert to fraction form
    78,975.92/108,989.70 = 43,168.34/x
  3. Step 3: Cross multiply
    78,975.92x = 108,989.70 × 43,168.34
  4. Step 4: Simplify right side
    78,975.92x = 4,704,904,426.10
  5. Step 5: Solve for x
    x = 4,704,904,426.10/78,975.92
  6. Step 6: Final answer
    x = 59,573.91

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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.