Home / 90,414.88-135,603.79-34,235.61

Finding the Fourth Proportional to 90,414.88, 135,603.79 and 34,235.61

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Solution

The fourth proportional to 90,414.88, 135,603.79 and 34,235.61 is: 51,346.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,414.88 : 135,603.79 = 34,235.61 : x
  2. Step 2: Convert to fraction form
    90,414.88/135,603.79 = 34,235.61/x
  3. Step 3: Cross multiply
    90,414.88x = 135,603.79 × 34,235.61
  4. Step 4: Simplify right side
    90,414.88x = 4,642,477,874.86
  5. Step 5: Solve for x
    x = 4,642,477,874.86/90,414.88
  6. Step 6: Final answer
    x = 51,346.39

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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.