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Finding the Fourth Proportional to 99,751.67, 149,682.59 and 40,628.96

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Solution

The fourth proportional to 99,751.67, 149,682.59 and 40,628.96 is: 60,965.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,751.67 : 149,682.59 = 40,628.96 : x
  2. Step 2: Convert to fraction form
    99,751.67/149,682.59 = 40,628.96/x
  3. Step 3: Cross multiply
    99,751.67x = 149,682.59 × 40,628.96
  4. Step 4: Simplify right side
    99,751.67x = 6,081,447,961.81
  5. Step 5: Solve for x
    x = 6,081,447,961.81/99,751.67
  6. Step 6: Final answer
    x = 60,965.88

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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.