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Finding the Fourth Proportional to 85,456.92, 117,926.90 and 49,155.60

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Solution

The fourth proportional to 85,456.92, 117,926.90 and 49,155.60 is: 67,832.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,456.92 : 117,926.90 = 49,155.60 : x
  2. Step 2: Convert to fraction form
    85,456.92/117,926.90 = 49,155.60/x
  3. Step 3: Cross multiply
    85,456.92x = 117,926.90 × 49,155.60
  4. Step 4: Simplify right side
    85,456.92x = 5,796,767,525.64
  5. Step 5: Solve for x
    x = 5,796,767,525.64/85,456.92
  6. Step 6: Final answer
    x = 67,832.63

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1.5x scale

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.