Home / 66,518.40-99,643.20-41,481.60

Finding the Fourth Proportional to 66,518.40, 99,643.20 and 41,481.60

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Solution

The fourth proportional to 66,518.40, 99,643.20 and 41,481.60 is: 62,138.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,518.40 : 99,643.20 = 41,481.60 : x
  2. Step 2: Convert to fraction form
    66,518.40/99,643.20 = 41,481.60/x
  3. Step 3: Cross multiply
    66,518.40x = 99,643.20 × 41,481.60
  4. Step 4: Simplify right side
    66,518.40x = 4,133,359,365.12
  5. Step 5: Solve for x
    x = 4,133,359,365.12/66,518.40
  6. Step 6: Final answer
    x = 62,138.59

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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.