Home / 85,560.35-117,906.75-61,641.86

Finding the Fourth Proportional to 85,560.35, 117,906.75 and 61,641.86

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Solution

The fourth proportional to 85,560.35, 117,906.75 and 61,641.86 is: 84,945.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,560.35 : 117,906.75 = 61,641.86 : x
  2. Step 2: Convert to fraction form
    85,560.35/117,906.75 = 61,641.86/x
  3. Step 3: Cross multiply
    85,560.35x = 117,906.75 × 61,641.86
  4. Step 4: Simplify right side
    85,560.35x = 7,267,990,787.02
  5. Step 5: Solve for x
    x = 7,267,990,787.02/85,560.35
  6. Step 6: Final answer
    x = 84,945.79

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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.