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Finding the Fourth Proportional to 68,389.56, 94,369.86 and 39,700.44

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Solution

The fourth proportional to 68,389.56, 94,369.86 and 39,700.44 is: 54,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,389.56 : 94,369.86 = 39,700.44 : x
  2. Step 2: Convert to fraction form
    68,389.56/94,369.86 = 39,700.44/x
  3. Step 3: Cross multiply
    68,389.56x = 94,369.86 × 39,700.44
  4. Step 4: Simplify right side
    68,389.56x = 3,746,524,964.74
  5. Step 5: Solve for x
    x = 3,746,524,964.74/68,389.56
  6. Step 6: Final answer
    x = 54,782.12

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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.