Home / 66,234.80-99,222.60-39,861.20

Finding the Fourth Proportional to 66,234.80, 99,222.60 and 39,861.20

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Solution

The fourth proportional to 66,234.80, 99,222.60 and 39,861.20 is: 59,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,234.80 : 99,222.60 = 39,861.20 : x
  2. Step 2: Convert to fraction form
    66,234.80/99,222.60 = 39,861.20/x
  3. Step 3: Cross multiply
    66,234.80x = 99,222.60 × 39,861.20
  4. Step 4: Simplify right side
    66,234.80x = 3,955,131,903.12
  5. Step 5: Solve for x
    x = 3,955,131,903.12/66,234.80
  6. Step 6: Final answer
    x = 59,713.80

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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.