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Finding the Fourth Proportional to 65,980, 91,052.60 and 35,765.36

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Solution

The fourth proportional to 65,980, 91,052.60 and 35,765.36 is: 49,356.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,980 : 91,052.60 = 35,765.36 : x
  2. Step 2: Convert to fraction form
    65,980/91,052.60 = 35,765.36/x
  3. Step 3: Cross multiply
    65,980x = 91,052.60 × 35,765.36
  4. Step 4: Simplify right side
    65,980x = 3,256,529,017.94
  5. Step 5: Solve for x
    x = 3,256,529,017.94/65,980
  6. Step 6: Final answer
    x = 49,356.31

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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.