Home / 90,408.69-135,645.57-31,250.34

Finding the Fourth Proportional to 90,408.69, 135,645.57 and 31,250.34

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Solution

The fourth proportional to 90,408.69, 135,645.57 and 31,250.34 is: 46,886.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,408.69 : 135,645.57 = 31,250.34 : x
  2. Step 2: Convert to fraction form
    90,408.69/135,645.57 = 31,250.34/x
  3. Step 3: Cross multiply
    90,408.69x = 135,645.57 × 31,250.34
  4. Step 4: Simplify right side
    90,408.69x = 4,238,970,181.99
  5. Step 5: Solve for x
    x = 4,238,970,181.99/90,408.69
  6. Step 6: Final answer
    x = 46,886.76

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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.