Home / 90,448.38-135,622.77-71,847.66

Finding the Fourth Proportional to 90,448.38, 135,622.77 and 71,847.66

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Solution

The fourth proportional to 90,448.38, 135,622.77 and 71,847.66 is: 107,731.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,448.38 : 135,622.77 = 71,847.66 : x
  2. Step 2: Convert to fraction form
    90,448.38/135,622.77 = 71,847.66/x
  3. Step 3: Cross multiply
    90,448.38x = 135,622.77 × 71,847.66
  4. Step 4: Simplify right side
    90,448.38x = 9,744,178,667.22
  5. Step 5: Solve for x
    x = 9,744,178,667.22/90,448.38
  6. Step 6: Final answer
    x = 107,731.93

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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.