Home / 52,790.72-72,851.21-28,917.78

Finding the Fourth Proportional to 52,790.72, 72,851.21 and 28,917.78

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Solution

The fourth proportional to 52,790.72, 72,851.21 and 28,917.78 is: 39,906.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,790.72 : 72,851.21 = 28,917.78 : x
  2. Step 2: Convert to fraction form
    52,790.72/72,851.21 = 28,917.78/x
  3. Step 3: Cross multiply
    52,790.72x = 72,851.21 × 28,917.78
  4. Step 4: Simplify right side
    52,790.72x = 2,106,695,118.92
  5. Step 5: Solve for x
    x = 2,106,695,118.92/52,790.72
  6. Step 6: Final answer
    x = 39,906.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.