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Finding the Fourth Proportional to 66,069.80, 99,104.70 and 16,821.80

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Solution

The fourth proportional to 66,069.80, 99,104.70 and 16,821.80 is: 25,232.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,069.80 : 99,104.70 = 16,821.80 : x
  2. Step 2: Convert to fraction form
    66,069.80/99,104.70 = 16,821.80/x
  3. Step 3: Cross multiply
    66,069.80x = 99,104.70 × 16,821.80
  4. Step 4: Simplify right side
    66,069.80x = 1,667,119,442.46
  5. Step 5: Solve for x
    x = 1,667,119,442.46/66,069.80
  6. Step 6: Final answer
    x = 25,232.70

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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.