Home / 47,739.78-71,585.07-21,421.97

Finding the Fourth Proportional to 47,739.78, 71,585.07 and 21,421.97

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Solution

The fourth proportional to 47,739.78, 71,585.07 and 21,421.97 is: 32,121.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,739.78 : 71,585.07 = 21,421.97 : x
  2. Step 2: Convert to fraction form
    47,739.78/71,585.07 = 21,421.97/x
  3. Step 3: Cross multiply
    47,739.78x = 71,585.07 × 21,421.97
  4. Step 4: Simplify right side
    47,739.78x = 1,533,493,052.17
  5. Step 5: Solve for x
    x = 1,533,493,052.17/47,739.78
  6. Step 6: Final answer
    x = 32,121.91

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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.