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Finding the Fourth Proportional to 90,961.96, 125,518.98 and 67,101.88

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Solution

The fourth proportional to 90,961.96, 125,518.98 and 67,101.88 is: 92,594.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,961.96 : 125,518.98 = 67,101.88 : x
  2. Step 2: Convert to fraction form
    90,961.96/125,518.98 = 67,101.88/x
  3. Step 3: Cross multiply
    90,961.96x = 125,518.98 × 67,101.88
  4. Step 4: Simplify right side
    90,961.96x = 8,422,559,533.68
  5. Step 5: Solve for x
    x = 8,422,559,533.68/90,961.96
  6. Step 6: Final answer
    x = 92,594.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.