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Finding the Fourth Proportional to 66,355.50, 99,533.26 and 17,107.50

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Solution

The fourth proportional to 66,355.50, 99,533.26 and 17,107.50 is: 25,661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.50 : 99,533.26 = 17,107.50 : x
  2. Step 2: Convert to fraction form
    66,355.50/99,533.26 = 17,107.50/x
  3. Step 3: Cross multiply
    66,355.50x = 99,533.26 × 17,107.50
  4. Step 4: Simplify right side
    66,355.50x = 1,702,765,245.45
  5. Step 5: Solve for x
    x = 1,702,765,245.45/66,355.50
  6. Step 6: Final answer
    x = 25,661.25

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1.5x scale

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.