Home / 90,451.78-124,817.25-50,161.75

Finding the Fourth Proportional to 90,451.78, 124,817.25 and 50,161.75

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Solution

The fourth proportional to 90,451.78, 124,817.25 and 50,161.75 is: 69,219.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,451.78 : 124,817.25 = 50,161.75 : x
  2. Step 2: Convert to fraction form
    90,451.78/124,817.25 = 50,161.75/x
  3. Step 3: Cross multiply
    90,451.78x = 124,817.25 × 50,161.75
  4. Step 4: Simplify right side
    90,451.78x = 6,261,051,690.19
  5. Step 5: Solve for x
    x = 6,261,051,690.19/90,451.78
  6. Step 6: Final answer
    x = 69,219.77

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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.