Home / 47,686.20-71,480.04-31,078.68

Finding the Fourth Proportional to 47,686.20, 71,480.04 and 31,078.68

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Solution

The fourth proportional to 47,686.20, 71,480.04 and 31,078.68 is: 46,585.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,686.20 : 71,480.04 = 31,078.68 : x
  2. Step 2: Convert to fraction form
    47,686.20/71,480.04 = 31,078.68/x
  3. Step 3: Cross multiply
    47,686.20x = 71,480.04 × 31,078.68
  4. Step 4: Simplify right side
    47,686.20x = 2,221,505,289.55
  5. Step 5: Solve for x
    x = 2,221,505,289.55/47,686.20
  6. Step 6: Final answer
    x = 46,585.92

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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.