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Finding the Fourth Proportional to 90,910.54, 136,373.68 and 27,744.88

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Solution

The fourth proportional to 90,910.54, 136,373.68 and 27,744.88 is: 41,619.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,910.54 : 136,373.68 = 27,744.88 : x
  2. Step 2: Convert to fraction form
    90,910.54/136,373.68 = 27,744.88/x
  3. Step 3: Cross multiply
    90,910.54x = 136,373.68 × 27,744.88
  4. Step 4: Simplify right side
    90,910.54x = 3,783,671,386.76
  5. Step 5: Solve for x
    x = 3,783,671,386.76/90,910.54
  6. Step 6: Final answer
    x = 41,619.72

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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.