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Finding the Fourth Proportional to 128,957.83, 193,403.94 and 50,029

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Solution

The fourth proportional to 128,957.83, 193,403.94 and 50,029 is: 75,030.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,957.83 : 193,403.94 = 50,029 : x
  2. Step 2: Convert to fraction form
    128,957.83/193,403.94 = 50,029/x
  3. Step 3: Cross multiply
    128,957.83x = 193,403.94 × 50,029
  4. Step 4: Simplify right side
    128,957.83x = 9,675,805,714.26
  5. Step 5: Solve for x
    x = 9,675,805,714.26/128,957.83
  6. Step 6: Final answer
    x = 75,030.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.