Home / 90,682.74-136,025.30-39,379.59

Finding the Fourth Proportional to 90,682.74, 136,025.30 and 39,379.59

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Solution

The fourth proportional to 90,682.74, 136,025.30 and 39,379.59 is: 59,069.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,682.74 : 136,025.30 = 39,379.59 : x
  2. Step 2: Convert to fraction form
    90,682.74/136,025.30 = 39,379.59/x
  3. Step 3: Cross multiply
    90,682.74x = 136,025.30 × 39,379.59
  4. Step 4: Simplify right side
    90,682.74x = 5,356,620,346.73
  5. Step 5: Solve for x
    x = 5,356,620,346.73/90,682.74
  6. Step 6: Final answer
    x = 59,069.90

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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.