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Finding the Fourth Proportional to 68,611.52, 102,902.88 and 19,352

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Solution

The fourth proportional to 68,611.52, 102,902.88 and 19,352 is: 29,023.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,611.52 : 102,902.88 = 19,352 : x
  2. Step 2: Convert to fraction form
    68,611.52/102,902.88 = 19,352/x
  3. Step 3: Cross multiply
    68,611.52x = 102,902.88 × 19,352
  4. Step 4: Simplify right side
    68,611.52x = 1,991,376,533.76
  5. Step 5: Solve for x
    x = 1,991,376,533.76/68,611.52
  6. Step 6: Final answer
    x = 29,023.94

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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.