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Finding the Fourth Proportional to 65,949.98, 91,009.08 and 38,725.64

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Solution

The fourth proportional to 65,949.98, 91,009.08 and 38,725.64 is: 53,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,949.98 : 91,009.08 = 38,725.64 : x
  2. Step 2: Convert to fraction form
    65,949.98/91,009.08 = 38,725.64/x
  3. Step 3: Cross multiply
    65,949.98x = 91,009.08 × 38,725.64
  4. Step 4: Simplify right side
    65,949.98x = 3,524,384,868.81
  5. Step 5: Solve for x
    x = 3,524,384,868.81/65,949.98
  6. Step 6: Final answer
    x = 53,440.27

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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.