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Finding the Fourth Proportional to 66,202.80, 99,294.60 and 19,450.80

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Solution

The fourth proportional to 66,202.80, 99,294.60 and 19,450.80 is: 29,173.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,202.80 : 99,294.60 = 19,450.80 : x
  2. Step 2: Convert to fraction form
    66,202.80/99,294.60 = 19,450.80/x
  3. Step 3: Cross multiply
    66,202.80x = 99,294.60 × 19,450.80
  4. Step 4: Simplify right side
    66,202.80x = 1,931,359,405.68
  5. Step 5: Solve for x
    x = 1,931,359,405.68/66,202.80
  6. Step 6: Final answer
    x = 29,173.38

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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.