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Finding the Fourth Proportional to 171,716.57, 257,587.15 and 45,355.56

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Solution

The fourth proportional to 171,716.57, 257,587.15 and 45,355.56 is: 68,036.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,716.57 : 257,587.15 = 45,355.56 : x
  2. Step 2: Convert to fraction form
    171,716.57/257,587.15 = 45,355.56/x
  3. Step 3: Cross multiply
    171,716.57x = 257,587.15 × 45,355.56
  4. Step 4: Simplify right side
    171,716.57x = 11,683,008,262.51
  5. Step 5: Solve for x
    x = 11,683,008,262.51/171,716.57
  6. Step 6: Final answer
    x = 68,036.58

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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.