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Finding the Fourth Proportional to 98,739, 136,259.91 and 54,027

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Solution

The fourth proportional to 98,739, 136,259.91 and 54,027 is: 74,557.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,739 : 136,259.91 = 54,027 : x
  2. Step 2: Convert to fraction form
    98,739/136,259.91 = 54,027/x
  3. Step 3: Cross multiply
    98,739x = 136,259.91 × 54,027
  4. Step 4: Simplify right side
    98,739x = 7,361,714,157.57
  5. Step 5: Solve for x
    x = 7,361,714,157.57/98,739
  6. Step 6: Final answer
    x = 74,557.31

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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.