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Finding the Fourth Proportional to 68,990.25, 95,206.64 and 39,182.25

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Solution

The fourth proportional to 68,990.25, 95,206.64 and 39,182.25 is: 54,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990.25 : 95,206.64 = 39,182.25 : x
  2. Step 2: Convert to fraction form
    68,990.25/95,206.64 = 39,182.25/x
  3. Step 3: Cross multiply
    68,990.25x = 95,206.64 × 39,182.25
  4. Step 4: Simplify right side
    68,990.25x = 3,730,410,174.23
  5. Step 5: Solve for x
    x = 3,730,410,174.23/68,990.25
  6. Step 6: Final answer
    x = 54,071.56

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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.