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Finding the Fourth Proportional to 90,625.80, 125,069.58 and 54,817.32

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Solution

The fourth proportional to 90,625.80, 125,069.58 and 54,817.32 is: 75,651.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,625.80 : 125,069.58 = 54,817.32 : x
  2. Step 2: Convert to fraction form
    90,625.80/125,069.58 = 54,817.32/x
  3. Step 3: Cross multiply
    90,625.80x = 125,069.58 × 54,817.32
  4. Step 4: Simplify right side
    90,625.80x = 6,855,979,189.13
  5. Step 5: Solve for x
    x = 6,855,979,189.13/90,625.80
  6. Step 6: Final answer
    x = 75,651.52

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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.