Home / 66,234.20-99,351.30-39,990.20

Finding the Fourth Proportional to 66,234.20, 99,351.30 and 39,990.20

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Solution

The fourth proportional to 66,234.20, 99,351.30 and 39,990.20 is: 59,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,234.20 : 99,351.30 = 39,990.20 : x
  2. Step 2: Convert to fraction form
    66,234.20/99,351.30 = 39,990.20/x
  3. Step 3: Cross multiply
    66,234.20x = 99,351.30 × 39,990.20
  4. Step 4: Simplify right side
    66,234.20x = 3,973,078,357.26
  5. Step 5: Solve for x
    x = 3,973,078,357.26/66,234.20
  6. Step 6: Final answer
    x = 59,985.30

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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.