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Finding the Fourth Proportional to 77,887.69, 107,414.44 and 51,020.40

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Solution

The fourth proportional to 77,887.69, 107,414.44 and 51,020.40 is: 70,361.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,887.69 : 107,414.44 = 51,020.40 : x
  2. Step 2: Convert to fraction form
    77,887.69/107,414.44 = 51,020.40/x
  3. Step 3: Cross multiply
    77,887.69x = 107,414.44 × 51,020.40
  4. Step 4: Simplify right side
    77,887.69x = 5,480,327,694.58
  5. Step 5: Solve for x
    x = 5,480,327,694.58/77,887.69
  6. Step 6: Final answer
    x = 70,361.92

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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.