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Finding the Fourth Proportional to 30,859.79, 46,286.64 and 8,672.67

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Solution

The fourth proportional to 30,859.79, 46,286.64 and 8,672.67 is: 13,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,859.79 : 46,286.64 = 8,672.67 : x
  2. Step 2: Convert to fraction form
    30,859.79/46,286.64 = 8,672.67/x
  3. Step 3: Cross multiply
    30,859.79x = 46,286.64 × 8,672.67
  4. Step 4: Simplify right side
    30,859.79x = 401,428,754.13
  5. Step 5: Solve for x
    x = 401,428,754.13/30,859.79
  6. Step 6: Final answer
    x = 13,008.15

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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.