Home / 83,879.60-125,815.32-31,285.04

Finding the Fourth Proportional to 83,879.60, 125,815.32 and 31,285.04

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Solution

The fourth proportional to 83,879.60, 125,815.32 and 31,285.04 is: 46,926.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,879.60 : 125,815.32 = 31,285.04 : x
  2. Step 2: Convert to fraction form
    83,879.60/125,815.32 = 31,285.04/x
  3. Step 3: Cross multiply
    83,879.60x = 125,815.32 × 31,285.04
  4. Step 4: Simplify right side
    83,879.60x = 3,936,137,318.81
  5. Step 5: Solve for x
    x = 3,936,137,318.81/83,879.60
  6. Step 6: Final answer
    x = 46,926.04

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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.