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Finding the Fourth Proportional to 65,991.13, 91,069.91 and 37,311.64

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Solution

The fourth proportional to 65,991.13, 91,069.91 and 37,311.64 is: 51,491.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,991.13 : 91,069.91 = 37,311.64 : x
  2. Step 2: Convert to fraction form
    65,991.13/91,069.91 = 37,311.64/x
  3. Step 3: Cross multiply
    65,991.13x = 91,069.91 × 37,311.64
  4. Step 4: Simplify right side
    65,991.13x = 3,397,967,696.75
  5. Step 5: Solve for x
    x = 3,397,967,696.75/65,991.13
  6. Step 6: Final answer
    x = 51,491.28

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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.