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Finding the Fourth Proportional to 65,012.45, 89,709.23 and 36,333.65

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Solution

The fourth proportional to 65,012.45, 89,709.23 and 36,333.65 is: 50,135.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,012.45 : 89,709.23 = 36,333.65 : x
  2. Step 2: Convert to fraction form
    65,012.45/89,709.23 = 36,333.65/x
  3. Step 3: Cross multiply
    65,012.45x = 89,709.23 × 36,333.65
  4. Step 4: Simplify right side
    65,012.45x = 3,259,463,134.38
  5. Step 5: Solve for x
    x = 3,259,463,134.38/65,012.45
  6. Step 6: Final answer
    x = 50,135.99

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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.