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Finding the Fourth Proportional to 66,568, 99,928.80 and 33,805.12

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Solution

The fourth proportional to 66,568, 99,928.80 and 33,805.12 is: 50,746.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,568 : 99,928.80 = 33,805.12 : x
  2. Step 2: Convert to fraction form
    66,568/99,928.80 = 33,805.12/x
  3. Step 3: Cross multiply
    66,568x = 99,928.80 × 33,805.12
  4. Step 4: Simplify right side
    66,568x = 3,378,105,075.46
  5. Step 5: Solve for x
    x = 3,378,105,075.46/66,568
  6. Step 6: Final answer
    x = 50,746.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.