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Finding the Fourth Proportional to 61,620.46, 92,442.12 and 19,511.20

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Solution

The fourth proportional to 61,620.46, 92,442.12 and 19,511.20 is: 29,270.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,620.46 : 92,442.12 = 19,511.20 : x
  2. Step 2: Convert to fraction form
    61,620.46/92,442.12 = 19,511.20/x
  3. Step 3: Cross multiply
    61,620.46x = 92,442.12 × 19,511.20
  4. Step 4: Simplify right side
    61,620.46x = 1,803,656,691.74
  5. Step 5: Solve for x
    x = 1,803,656,691.74/61,620.46
  6. Step 6: Final answer
    x = 29,270.42

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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.