Home / 78,793.20-108,730.62-42,982.92

Finding the Fourth Proportional to 78,793.20, 108,730.62 and 42,982.92

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Solution

The fourth proportional to 78,793.20, 108,730.62 and 42,982.92 is: 59,314.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,793.20 : 108,730.62 = 42,982.92 : x
  2. Step 2: Convert to fraction form
    78,793.20/108,730.62 = 42,982.92/x
  3. Step 3: Cross multiply
    78,793.20x = 108,730.62 × 42,982.92
  4. Step 4: Simplify right side
    78,793.20x = 4,673,559,541.01
  5. Step 5: Solve for x
    x = 4,673,559,541.01/78,793.20
  6. Step 6: Final answer
    x = 59,314.25

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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.