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Finding the Fourth Proportional to 71,449.44, 98,605.80 and 39,624.56

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Solution

The fourth proportional to 71,449.44, 98,605.80 and 39,624.56 is: 54,684.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,449.44 : 98,605.80 = 39,624.56 : x
  2. Step 2: Convert to fraction form
    71,449.44/98,605.80 = 39,624.56/x
  3. Step 3: Cross multiply
    71,449.44x = 98,605.80 × 39,624.56
  4. Step 4: Simplify right side
    71,449.44x = 3,907,211,438.45
  5. Step 5: Solve for x
    x = 3,907,211,438.45/71,449.44
  6. Step 6: Final answer
    x = 54,684.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.