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Finding the Fourth Proportional to 66,110.80, 99,020.40 and 34,909.60

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Solution

The fourth proportional to 66,110.80, 99,020.40 and 34,909.60 is: 52,287.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,110.80 : 99,020.40 = 34,909.60 : x
  2. Step 2: Convert to fraction form
    66,110.80/99,020.40 = 34,909.60/x
  3. Step 3: Cross multiply
    66,110.80x = 99,020.40 × 34,909.60
  4. Step 4: Simplify right side
    66,110.80x = 3,456,762,555.84
  5. Step 5: Solve for x
    x = 3,456,762,555.84/66,110.80
  6. Step 6: Final answer
    x = 52,287.41

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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.