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Finding the Fourth Proportional to 76,338.30, 114,390.67 and 40,804.67

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Solution

The fourth proportional to 76,338.30, 114,390.67 and 40,804.67 is: 61,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,338.30 : 114,390.67 = 40,804.67 : x
  2. Step 2: Convert to fraction form
    76,338.30/114,390.67 = 40,804.67/x
  3. Step 3: Cross multiply
    76,338.30x = 114,390.67 × 40,804.67
  4. Step 4: Simplify right side
    76,338.30x = 4,667,673,540.43
  5. Step 5: Solve for x
    x = 4,667,673,540.43/76,338.30
  6. Step 6: Final answer
    x = 61,144.58

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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.