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Finding the Fourth Proportional to 90,549.88, 135,824.70 and 34,389.88

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Solution

The fourth proportional to 90,549.88, 135,824.70 and 34,389.88 is: 51,584.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,549.88 : 135,824.70 = 34,389.88 : x
  2. Step 2: Convert to fraction form
    90,549.88/135,824.70 = 34,389.88/x
  3. Step 3: Cross multiply
    90,549.88x = 135,824.70 × 34,389.88
  4. Step 4: Simplify right side
    90,549.88x = 4,670,994,729.99
  5. Step 5: Solve for x
    x = 4,670,994,729.99/90,549.88
  6. Step 6: Final answer
    x = 51,584.77

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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.