Home / 90,305.09-135,499.67-40,418.93

Finding the Fourth Proportional to 90,305.09, 135,499.67 and 40,418.93

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Solution

The fourth proportional to 90,305.09, 135,499.67 and 40,418.93 is: 60,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,305.09 : 135,499.67 = 40,418.93 : x
  2. Step 2: Convert to fraction form
    90,305.09/135,499.67 = 40,418.93/x
  3. Step 3: Cross multiply
    90,305.09x = 135,499.67 × 40,418.93
  4. Step 4: Simplify right side
    90,305.09x = 5,476,750,797.16
  5. Step 5: Solve for x
    x = 5,476,750,797.16/90,305.09
  6. Step 6: Final answer
    x = 60,647.20

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1.5x scale

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.