Home / 55,845.60-83,758.80-20,767.20

Finding the Fourth Proportional to 55,845.60, 83,758.80 and 20,767.20

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Solution

The fourth proportional to 55,845.60, 83,758.80 and 20,767.20 is: 31,147.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,845.60 : 83,758.80 = 20,767.20 : x
  2. Step 2: Convert to fraction form
    55,845.60/83,758.80 = 20,767.20/x
  3. Step 3: Cross multiply
    55,845.60x = 83,758.80 × 20,767.20
  4. Step 4: Simplify right side
    55,845.60x = 1,739,435,751.36
  5. Step 5: Solve for x
    x = 1,739,435,751.36/55,845.60
  6. Step 6: Final answer
    x = 31,147.23

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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.