Home / 90,589.38-125,024.86-54,779.64

Finding the Fourth Proportional to 90,589.38, 125,024.86 and 54,779.64

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Solution

The fourth proportional to 90,589.38, 125,024.86 and 54,779.64 is: 75,602.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,589.38 : 125,024.86 = 54,779.64 : x
  2. Step 2: Convert to fraction form
    90,589.38/125,024.86 = 54,779.64/x
  3. Step 3: Cross multiply
    90,589.38x = 125,024.86 × 54,779.64
  4. Step 4: Simplify right side
    90,589.38x = 6,848,816,821.85
  5. Step 5: Solve for x
    x = 6,848,816,821.85/90,589.38
  6. Step 6: Final answer
    x = 75,602.87

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1.5x scale

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.