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Finding the Fourth Proportional to 81,759.60, 122,669.64 and 35,048.88

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Solution

The fourth proportional to 81,759.60, 122,669.64 and 35,048.88 is: 52,586.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,759.60 : 122,669.64 = 35,048.88 : x
  2. Step 2: Convert to fraction form
    81,759.60/122,669.64 = 35,048.88/x
  3. Step 3: Cross multiply
    81,759.60x = 122,669.64 × 35,048.88
  4. Step 4: Simplify right side
    81,759.60x = 4,299,433,492.00
  5. Step 5: Solve for x
    x = 4,299,433,492.00/81,759.60
  6. Step 6: Final answer
    x = 52,586.28

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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.