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Finding the Fourth Proportional to 66,671.44, 99,992.40 and 19,276.24

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Solution

The fourth proportional to 66,671.44, 99,992.40 and 19,276.24 is: 28,910.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,671.44 : 99,992.40 = 19,276.24 : x
  2. Step 2: Convert to fraction form
    66,671.44/99,992.40 = 19,276.24/x
  3. Step 3: Cross multiply
    66,671.44x = 99,992.40 × 19,276.24
  4. Step 4: Simplify right side
    66,671.44x = 1,927,477,500.58
  5. Step 5: Solve for x
    x = 1,927,477,500.58/66,671.44
  6. Step 6: Final answer
    x = 28,910.09

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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.