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Finding the Fourth Proportional to 65,991.65, 91,044.60 and 43,342.91

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Solution

The fourth proportional to 65,991.65, 91,044.60 and 43,342.91 is: 59,797.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,991.65 : 91,044.60 = 43,342.91 : x
  2. Step 2: Convert to fraction form
    65,991.65/91,044.60 = 43,342.91/x
  3. Step 3: Cross multiply
    65,991.65x = 91,044.60 × 43,342.91
  4. Step 4: Simplify right side
    65,991.65x = 3,946,137,448.56
  5. Step 5: Solve for x
    x = 3,946,137,448.56/65,991.65
  6. Step 6: Final answer
    x = 59,797.53

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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.