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Finding the Fourth Proportional to 90,817.43, 125,170.58 and 85,568.63

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Solution

The fourth proportional to 90,817.43, 125,170.58 and 85,568.63 is: 117,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,817.43 : 125,170.58 = 85,568.63 : x
  2. Step 2: Convert to fraction form
    90,817.43/125,170.58 = 85,568.63/x
  3. Step 3: Cross multiply
    90,817.43x = 125,170.58 × 85,568.63
  4. Step 4: Simplify right side
    90,817.43x = 10,710,674,634.97
  5. Step 5: Solve for x
    x = 10,710,674,634.97/90,817.43
  6. Step 6: Final answer
    x = 117,936.34

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