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Finding the Fourth Proportional to 70,687.26, 105,990.84 and 23,289.66

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Solution

The fourth proportional to 70,687.26, 105,990.84 and 23,289.66 is: 34,921.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,687.26 : 105,990.84 = 23,289.66 : x
  2. Step 2: Convert to fraction form
    70,687.26/105,990.84 = 23,289.66/x
  3. Step 3: Cross multiply
    70,687.26x = 105,990.84 × 23,289.66
  4. Step 4: Simplify right side
    70,687.26x = 2,468,490,626.71
  5. Step 5: Solve for x
    x = 2,468,490,626.71/70,687.26
  6. Step 6: Final answer
    x = 34,921.29

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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.