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Finding the Fourth Proportional to 77,846.70, 107,448.49 and 50,690.57

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Solution

The fourth proportional to 77,846.70, 107,448.49 and 50,690.57 is: 69,966.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,846.70 : 107,448.49 = 50,690.57 : x
  2. Step 2: Convert to fraction form
    77,846.70/107,448.49 = 50,690.57/x
  3. Step 3: Cross multiply
    77,846.70x = 107,448.49 × 50,690.57
  4. Step 4: Simplify right side
    77,846.70x = 5,446,625,203.74
  5. Step 5: Solve for x
    x = 5,446,625,203.74/77,846.70
  6. Step 6: Final answer
    x = 69,966.04

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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.