Home / 83,782.20-125,630.10-31,164.60

Finding the Fourth Proportional to 83,782.20, 125,630.10 and 31,164.60

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Solution

The fourth proportional to 83,782.20, 125,630.10 and 31,164.60 is: 46,730.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,782.20 : 125,630.10 = 31,164.60 : x
  2. Step 2: Convert to fraction form
    83,782.20/125,630.10 = 31,164.60/x
  3. Step 3: Cross multiply
    83,782.20x = 125,630.10 × 31,164.60
  4. Step 4: Simplify right side
    83,782.20x = 3,915,211,814.46
  5. Step 5: Solve for x
    x = 3,915,211,814.46/83,782.20
  6. Step 6: Final answer
    x = 46,730.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.