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Finding the Fourth Proportional to 70,683.36, 106,025.49 and 20,763.26

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Solution

The fourth proportional to 70,683.36, 106,025.49 and 20,763.26 is: 31,145.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,683.36 : 106,025.49 = 20,763.26 : x
  2. Step 2: Convert to fraction form
    70,683.36/106,025.49 = 20,763.26/x
  3. Step 3: Cross multiply
    70,683.36x = 106,025.49 × 20,763.26
  4. Step 4: Simplify right side
    70,683.36x = 2,201,434,682.97
  5. Step 5: Solve for x
    x = 2,201,434,682.97/70,683.36
  6. Step 6: Final answer
    x = 31,145.02

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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.