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Finding the Fourth Proportional to 86,046.36, 118,469.34 and 73,420.44

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Solution

The fourth proportional to 86,046.36, 118,469.34 and 73,420.44 is: 101,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,046.36 : 118,469.34 = 73,420.44 : x
  2. Step 2: Convert to fraction form
    86,046.36/118,469.34 = 73,420.44/x
  3. Step 3: Cross multiply
    86,046.36x = 118,469.34 × 73,420.44
  4. Step 4: Simplify right side
    86,046.36x = 8,698,071,069.31
  5. Step 5: Solve for x
    x = 8,698,071,069.31/86,046.36
  6. Step 6: Final answer
    x = 101,085.87

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1.5x scale

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.