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Finding the Fourth Proportional to 66,245, 99,367.56 and 16,997

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Solution

The fourth proportional to 66,245, 99,367.56 and 16,997 is: 25,495.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245 : 99,367.56 = 16,997 : x
  2. Step 2: Convert to fraction form
    66,245/99,367.56 = 16,997/x
  3. Step 3: Cross multiply
    66,245x = 99,367.56 × 16,997
  4. Step 4: Simplify right side
    66,245x = 1,688,950,417.32
  5. Step 5: Solve for x
    x = 1,688,950,417.32/66,245
  6. Step 6: Final answer
    x = 25,495.52

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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.