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Finding the Fourth Proportional to 85,620.54, 118,083.80 and 51,621.56

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Solution

The fourth proportional to 85,620.54, 118,083.80 and 51,621.56 is: 71,194.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,620.54 : 118,083.80 = 51,621.56 : x
  2. Step 2: Convert to fraction form
    85,620.54/118,083.80 = 51,621.56/x
  3. Step 3: Cross multiply
    85,620.54x = 118,083.80 × 51,621.56
  4. Step 4: Simplify right side
    85,620.54x = 6,095,669,966.73
  5. Step 5: Solve for x
    x = 6,095,669,966.73/85,620.54
  6. Step 6: Final answer
    x = 71,194.01

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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.