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Finding the Fourth Proportional to 49,745, 68,649.40 and 30,617.68

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Solution

The fourth proportional to 49,745, 68,649.40 and 30,617.68 is: 42,253.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,745 : 68,649.40 = 30,617.68 : x
  2. Step 2: Convert to fraction form
    49,745/68,649.40 = 30,617.68/x
  3. Step 3: Cross multiply
    49,745x = 68,649.40 × 30,617.68
  4. Step 4: Simplify right side
    49,745x = 2,101,885,361.39
  5. Step 5: Solve for x
    x = 2,101,885,361.39/49,745
  6. Step 6: Final answer
    x = 42,253.20

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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.