Home / 55,640.57-83,402.54-20,557.85

Finding the Fourth Proportional to 55,640.57, 83,402.54 and 20,557.85

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Solution

The fourth proportional to 55,640.57, 83,402.54 and 20,557.85 is: 30,815.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,640.57 : 83,402.54 = 20,557.85 : x
  2. Step 2: Convert to fraction form
    55,640.57/83,402.54 = 20,557.85/x
  3. Step 3: Cross multiply
    55,640.57x = 83,402.54 × 20,557.85
  4. Step 4: Simplify right side
    55,640.57x = 1,714,576,804.15
  5. Step 5: Solve for x
    x = 1,714,576,804.15/55,640.57
  6. Step 6: Final answer
    x = 30,815.23

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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.