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Finding the Fourth Proportional to 68,497.65, 102,745.04 and 31,561.65

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Solution

The fourth proportional to 68,497.65, 102,745.04 and 31,561.65 is: 47,341.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,497.65 : 102,745.04 = 31,561.65 : x
  2. Step 2: Convert to fraction form
    68,497.65/102,745.04 = 31,561.65/x
  3. Step 3: Cross multiply
    68,497.65x = 102,745.04 × 31,561.65
  4. Step 4: Simplify right side
    68,497.65x = 3,242,802,833.91
  5. Step 5: Solve for x
    x = 3,242,802,833.91/68,497.65
  6. Step 6: Final answer
    x = 47,341.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.