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Finding the Fourth Proportional to 79,617.46, 109,872.28 and 43,809.78

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Solution

The fourth proportional to 79,617.46, 109,872.28 and 43,809.78 is: 60,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,617.46 : 109,872.28 = 43,809.78 : x
  2. Step 2: Convert to fraction form
    79,617.46/109,872.28 = 43,809.78/x
  3. Step 3: Cross multiply
    79,617.46x = 109,872.28 × 43,809.78
  4. Step 4: Simplify right side
    79,617.46x = 4,813,480,414.90
  5. Step 5: Solve for x
    x = 4,813,480,414.90/79,617.46
  6. Step 6: Final answer
    x = 60,457.60

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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.