Home / 90,519.60-135,724.86-40,590.66

Finding the Fourth Proportional to 90,519.60, 135,724.86 and 40,590.66

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Solution

The fourth proportional to 90,519.60, 135,724.86 and 40,590.66 is: 60,861.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,519.60 : 135,724.86 = 40,590.66 : x
  2. Step 2: Convert to fraction form
    90,519.60/135,724.86 = 40,590.66/x
  3. Step 3: Cross multiply
    90,519.60x = 135,724.86 × 40,590.66
  4. Step 4: Simplify right side
    90,519.60x = 5,509,161,645.81
  5. Step 5: Solve for x
    x = 5,509,161,645.81/90,519.60
  6. Step 6: Final answer
    x = 60,861.53

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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.