Home / 54,188.20-81,296.48-20,909.35

Finding the Fourth Proportional to 54,188.20, 81,296.48 and 20,909.35

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Solution

The fourth proportional to 54,188.20, 81,296.48 and 20,909.35 is: 31,369.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,188.20 : 81,296.48 = 20,909.35 : x
  2. Step 2: Convert to fraction form
    54,188.20/81,296.48 = 20,909.35/x
  3. Step 3: Cross multiply
    54,188.20x = 81,296.48 × 20,909.35
  4. Step 4: Simplify right side
    54,188.20x = 1,699,856,554.09
  5. Step 5: Solve for x
    x = 1,699,856,554.09/54,188.20
  6. Step 6: Final answer
    x = 31,369.50

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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.