Home / 81,485.25-122,238.81-34,749.06

Finding the Fourth Proportional to 81,485.25, 122,238.81 and 34,749.06

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Solution

The fourth proportional to 81,485.25, 122,238.81 and 34,749.06 is: 52,128.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,485.25 : 122,238.81 = 34,749.06 : x
  2. Step 2: Convert to fraction form
    81,485.25/122,238.81 = 34,749.06/x
  3. Step 3: Cross multiply
    81,485.25x = 122,238.81 × 34,749.06
  4. Step 4: Simplify right side
    81,485.25x = 4,247,683,743.02
  5. Step 5: Solve for x
    x = 4,247,683,743.02/81,485.25
  6. Step 6: Final answer
    x = 52,128.25

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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.