Home / 76,540.70-105,662.04-51,090.06

Finding the Fourth Proportional to 76,540.70, 105,662.04 and 51,090.06

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Solution

The fourth proportional to 76,540.70, 105,662.04 and 51,090.06 is: 70,528.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,540.70 : 105,662.04 = 51,090.06 : x
  2. Step 2: Convert to fraction form
    76,540.70/105,662.04 = 51,090.06/x
  3. Step 3: Cross multiply
    76,540.70x = 105,662.04 × 51,090.06
  4. Step 4: Simplify right side
    76,540.70x = 5,398,279,963.32
  5. Step 5: Solve for x
    x = 5,398,279,963.32/76,540.70
  6. Step 6: Final answer
    x = 70,528.23

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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.