Home / 90,575.55-135,863.82-53,109.36

Finding the Fourth Proportional to 90,575.55, 135,863.82 and 53,109.36

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Solution

The fourth proportional to 90,575.55, 135,863.82 and 53,109.36 is: 79,664.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,575.55 : 135,863.82 = 53,109.36 : x
  2. Step 2: Convert to fraction form
    90,575.55/135,863.82 = 53,109.36/x
  3. Step 3: Cross multiply
    90,575.55x = 135,863.82 × 53,109.36
  4. Step 4: Simplify right side
    90,575.55x = 7,215,640,527.36
  5. Step 5: Solve for x
    x = 7,215,640,527.36/90,575.55
  6. Step 6: Final answer
    x = 79,664.33

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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.