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Finding the Fourth Proportional to 84,138.59, 116,053.44 and 50,120.87

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Solution

The fourth proportional to 84,138.59, 116,053.44 and 50,120.87 is: 69,132.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,138.59 : 116,053.44 = 50,120.87 : x
  2. Step 2: Convert to fraction form
    84,138.59/116,053.44 = 50,120.87/x
  3. Step 3: Cross multiply
    84,138.59x = 116,053.44 × 50,120.87
  4. Step 4: Simplify right side
    84,138.59x = 5,816,698,799.03
  5. Step 5: Solve for x
    x = 5,816,698,799.03/84,138.59
  6. Step 6: Final answer
    x = 69,132.36

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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.