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Finding the Fourth Proportional to 85,621, 118,157 and 47,895.24

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Solution

The fourth proportional to 85,621, 118,157 and 47,895.24 is: 66,095.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,621 : 118,157 = 47,895.24 : x
  2. Step 2: Convert to fraction form
    85,621/118,157 = 47,895.24/x
  3. Step 3: Cross multiply
    85,621x = 118,157 × 47,895.24
  4. Step 4: Simplify right side
    85,621x = 5,659,157,872.68
  5. Step 5: Solve for x
    x = 5,659,157,872.68/85,621
  6. Step 6: Final answer
    x = 66,095.44

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Why These Related Problems?

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