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Finding the Fourth Proportional to 79,216.65, 109,318.34 and 43,406.56

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Solution

The fourth proportional to 79,216.65, 109,318.34 and 43,406.56 is: 59,900.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,216.65 : 109,318.34 = 43,406.56 : x
  2. Step 2: Convert to fraction form
    79,216.65/109,318.34 = 43,406.56/x
  3. Step 3: Cross multiply
    79,216.65x = 109,318.34 × 43,406.56
  4. Step 4: Simplify right side
    79,216.65x = 4,745,133,329.47
  5. Step 5: Solve for x
    x = 4,745,133,329.47/79,216.65
  6. Step 6: Final answer
    x = 59,900.71

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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.