Home / 54,221.20-81,329.40-14,778.31

Finding the Fourth Proportional to 54,221.20, 81,329.40 and 14,778.31

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Solution

The fourth proportional to 54,221.20, 81,329.40 and 14,778.31 is: 22,166.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,221.20 : 81,329.40 = 14,778.31 : x
  2. Step 2: Convert to fraction form
    54,221.20/81,329.40 = 14,778.31/x
  3. Step 3: Cross multiply
    54,221.20x = 81,329.40 × 14,778.31
  4. Step 4: Simplify right side
    54,221.20x = 1,201,911,211.20
  5. Step 5: Solve for x
    x = 1,201,911,211.20/54,221.20
  6. Step 6: Final answer
    x = 22,166.81

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1.5x scale

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.