Home / 53,931.87-80,922.89-20,640.96

Finding the Fourth Proportional to 53,931.87, 80,922.89 and 20,640.96

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Solution

The fourth proportional to 53,931.87, 80,922.89 and 20,640.96 is: 30,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,931.87 : 80,922.89 = 20,640.96 : x
  2. Step 2: Convert to fraction form
    53,931.87/80,922.89 = 20,640.96/x
  3. Step 3: Cross multiply
    53,931.87x = 80,922.89 × 20,640.96
  4. Step 4: Simplify right side
    53,931.87x = 1,670,326,032.37
  5. Step 5: Solve for x
    x = 1,670,326,032.37/53,931.87
  6. Step 6: Final answer
    x = 30,971.04

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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.