Home / 55,485.30-83,258.19-20,419.86

Finding the Fourth Proportional to 55,485.30, 83,258.19 and 20,419.86

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Solution

The fourth proportional to 55,485.30, 83,258.19 and 20,419.86 is: 30,640.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,485.30 : 83,258.19 = 20,419.86 : x
  2. Step 2: Convert to fraction form
    55,485.30/83,258.19 = 20,419.86/x
  3. Step 3: Cross multiply
    55,485.30x = 83,258.19 × 20,419.86
  4. Step 4: Simplify right side
    55,485.30x = 1,700,120,583.65
  5. Step 5: Solve for x
    x = 1,700,120,583.65/55,485.30
  6. Step 6: Final answer
    x = 30,640.92

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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.