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Finding the Fourth Proportional to 66,069.48, 99,104.86 and 16,821.48

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Solution

The fourth proportional to 66,069.48, 99,104.86 and 16,821.48 is: 25,232.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,069.48 : 99,104.86 = 16,821.48 : x
  2. Step 2: Convert to fraction form
    66,069.48/99,104.86 = 16,821.48/x
  3. Step 3: Cross multiply
    66,069.48x = 99,104.86 × 16,821.48
  4. Step 4: Simplify right side
    66,069.48x = 1,667,090,420.39
  5. Step 5: Solve for x
    x = 1,667,090,420.39/66,069.48
  6. Step 6: Final answer
    x = 25,232.38

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1.5x scale

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.