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Finding the Fourth Proportional to 68,990.57, 95,207.07 and 39,182.57

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Solution

The fourth proportional to 68,990.57, 95,207.07 and 39,182.57 is: 54,071.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990.57 : 95,207.07 = 39,182.57 : x
  2. Step 2: Convert to fraction form
    68,990.57/95,207.07 = 39,182.57/x
  3. Step 3: Cross multiply
    68,990.57x = 95,207.07 × 39,182.57
  4. Step 4: Simplify right side
    68,990.57x = 3,730,457,012.82
  5. Step 5: Solve for x
    x = 3,730,457,012.82/68,990.57
  6. Step 6: Final answer
    x = 54,071.99

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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.