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Finding the Fourth Proportional to 171,989.75, 257,996 and 45,628.22

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Solution

The fourth proportional to 171,989.75, 257,996 and 45,628.22 is: 68,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,989.75 : 257,996 = 45,628.22 : x
  2. Step 2: Convert to fraction form
    171,989.75/257,996 = 45,628.22/x
  3. Step 3: Cross multiply
    171,989.75x = 257,996 × 45,628.22
  4. Step 4: Simplify right side
    171,989.75x = 11,771,898,247.12
  5. Step 5: Solve for x
    x = 11,771,898,247.12/171,989.75
  6. Step 6: Final answer
    x = 68,445.35

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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.