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Finding the Fourth Proportional to 79,649.81, 109,916.76 and 43,839.56

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Solution

The fourth proportional to 79,649.81, 109,916.76 and 43,839.56 is: 60,498.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,649.81 : 109,916.76 = 43,839.56 : x
  2. Step 2: Convert to fraction form
    79,649.81/109,916.76 = 43,839.56/x
  3. Step 3: Cross multiply
    79,649.81x = 109,916.76 × 43,839.56
  4. Step 4: Simplify right side
    79,649.81x = 4,818,702,395.03
  5. Step 5: Solve for x
    x = 4,818,702,395.03/79,649.81
  6. Step 6: Final answer
    x = 60,498.61

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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.