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Finding the Fourth Proportional to 77,491.44, 106,910.69 and 50,649.45

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Solution

The fourth proportional to 77,491.44, 106,910.69 and 50,649.45 is: 69,878.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,491.44 : 106,910.69 = 50,649.45 : x
  2. Step 2: Convert to fraction form
    77,491.44/106,910.69 = 50,649.45/x
  3. Step 3: Cross multiply
    77,491.44x = 106,910.69 × 50,649.45
  4. Step 4: Simplify right side
    77,491.44x = 5,414,966,993.46
  5. Step 5: Solve for x
    x = 5,414,966,993.46/77,491.44
  6. Step 6: Final answer
    x = 69,878.26

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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.