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Finding the Fourth Proportional to 68,336, 102,521.28 and 19,088

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Solution

The fourth proportional to 68,336, 102,521.28 and 19,088 is: 28,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,336 : 102,521.28 = 19,088 : x
  2. Step 2: Convert to fraction form
    68,336/102,521.28 = 19,088/x
  3. Step 3: Cross multiply
    68,336x = 102,521.28 × 19,088
  4. Step 4: Simplify right side
    68,336x = 1,956,926,192.64
  5. Step 5: Solve for x
    x = 1,956,926,192.64/68,336
  6. Step 6: Final answer
    x = 28,636.83

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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.