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Finding the Fourth Proportional to 68,007.65, 102,011.32 and 18,087.76

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Solution

The fourth proportional to 68,007.65, 102,011.32 and 18,087.76 is: 27,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,007.65 : 102,011.32 = 18,087.76 : x
  2. Step 2: Convert to fraction form
    68,007.65/102,011.32 = 18,087.76/x
  3. Step 3: Cross multiply
    68,007.65x = 102,011.32 × 18,087.76
  4. Step 4: Simplify right side
    68,007.65x = 1,845,156,273.44
  5. Step 5: Solve for x
    x = 1,845,156,273.44/68,007.65
  6. Step 6: Final answer
    x = 27,131.60

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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.