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Finding the Fourth Proportional to 68,516.77, 102,775.20 and 18,596.88

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Solution

The fourth proportional to 68,516.77, 102,775.20 and 18,596.88 is: 27,895.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,516.77 : 102,775.20 = 18,596.88 : x
  2. Step 2: Convert to fraction form
    68,516.77/102,775.20 = 18,596.88/x
  3. Step 3: Cross multiply
    68,516.77x = 102,775.20 × 18,596.88
  4. Step 4: Simplify right side
    68,516.77x = 1,911,298,061.38
  5. Step 5: Solve for x
    x = 1,911,298,061.38/68,516.77
  6. Step 6: Final answer
    x = 27,895.33

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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.