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Finding the Fourth Proportional to 122,979.42, 184,488.54 and 43,039.71

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Solution

The fourth proportional to 122,979.42, 184,488.54 and 43,039.71 is: 64,566.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,979.42 : 184,488.54 = 43,039.71 : x
  2. Step 2: Convert to fraction form
    122,979.42/184,488.54 = 43,039.71/x
  3. Step 3: Cross multiply
    122,979.42x = 184,488.54 × 43,039.71
  4. Step 4: Simplify right side
    122,979.42x = 7,940,333,259.92
  5. Step 5: Solve for x
    x = 7,940,333,259.92/122,979.42
  6. Step 6: Final answer
    x = 64,566.36

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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.