Home / 54,220.20-81,330.30-19,159.80

Finding the Fourth Proportional to 54,220.20, 81,330.30 and 19,159.80

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Solution

The fourth proportional to 54,220.20, 81,330.30 and 19,159.80 is: 28,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,220.20 : 81,330.30 = 19,159.80 : x
  2. Step 2: Convert to fraction form
    54,220.20/81,330.30 = 19,159.80/x
  3. Step 3: Cross multiply
    54,220.20x = 81,330.30 × 19,159.80
  4. Step 4: Simplify right side
    54,220.20x = 1,558,272,281.94
  5. Step 5: Solve for x
    x = 1,558,272,281.94/54,220.20
  6. Step 6: Final answer
    x = 28,739.70

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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.