Home / 89,853.20-134,779.80-54,861.20

Finding the Fourth Proportional to 89,853.20, 134,779.80 and 54,861.20

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Solution

The fourth proportional to 89,853.20, 134,779.80 and 54,861.20 is: 82,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,853.20 : 134,779.80 = 54,861.20 : x
  2. Step 2: Convert to fraction form
    89,853.20/134,779.80 = 54,861.20/x
  3. Step 3: Cross multiply
    89,853.20x = 134,779.80 × 54,861.20
  4. Step 4: Simplify right side
    89,853.20x = 7,394,181,563.76
  5. Step 5: Solve for x
    x = 7,394,181,563.76/89,853.20
  6. Step 6: Final answer
    x = 82,291.80

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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.