Home / 47,429.72-71,127.80-20,788.64

Finding the Fourth Proportional to 47,429.72, 71,127.80 and 20,788.64

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Solution

The fourth proportional to 47,429.72, 71,127.80 and 20,788.64 is: 31,175.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,429.72 : 71,127.80 = 20,788.64 : x
  2. Step 2: Convert to fraction form
    47,429.72/71,127.80 = 20,788.64/x
  3. Step 3: Cross multiply
    47,429.72x = 71,127.80 × 20,788.64
  4. Step 4: Simplify right side
    47,429.72x = 1,478,650,228.19
  5. Step 5: Solve for x
    x = 1,478,650,228.19/47,429.72
  6. Step 6: Final answer
    x = 31,175.61

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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.