Home / 84,749.63-127,110.54-31,429.09

Finding the Fourth Proportional to 84,749.63, 127,110.54 and 31,429.09

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Solution

The fourth proportional to 84,749.63, 127,110.54 and 31,429.09 is: 47,138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,749.63 : 127,110.54 = 31,429.09 : x
  2. Step 2: Convert to fraction form
    84,749.63/127,110.54 = 31,429.09/x
  3. Step 3: Cross multiply
    84,749.63x = 127,110.54 × 31,429.09
  4. Step 4: Simplify right side
    84,749.63x = 3,994,968,997.96
  5. Step 5: Solve for x
    x = 3,994,968,997.96/84,749.63
  6. Step 6: Final answer
    x = 47,138.48

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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.