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Finding the Fourth Proportional to 79,302.70, 109,409.34 and 45,286.66

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Solution

The fourth proportional to 79,302.70, 109,409.34 and 45,286.66 is: 62,479.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,302.70 : 109,409.34 = 45,286.66 : x
  2. Step 2: Convert to fraction form
    79,302.70/109,409.34 = 45,286.66/x
  3. Step 3: Cross multiply
    79,302.70x = 109,409.34 × 45,286.66
  4. Step 4: Simplify right side
    79,302.70x = 4,954,783,581.40
  5. Step 5: Solve for x
    x = 4,954,783,581.40/79,302.70
  6. Step 6: Final answer
    x = 62,479.38

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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.