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Finding the Fourth Proportional to 69,629.99, 96,131.27 and 65,644.79

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Solution

The fourth proportional to 69,629.99, 96,131.27 and 65,644.79 is: 90,629.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,629.99 : 96,131.27 = 65,644.79 : x
  2. Step 2: Convert to fraction form
    69,629.99/96,131.27 = 65,644.79/x
  3. Step 3: Cross multiply
    69,629.99x = 96,131.27 × 65,644.79
  4. Step 4: Simplify right side
    69,629.99x = 6,310,516,715.04
  5. Step 5: Solve for x
    x = 6,310,516,715.04/69,629.99
  6. Step 6: Final answer
    x = 90,629.30

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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.