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Finding the Fourth Proportional to 66,203.40, 99,218.70 and 30,660.60

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Solution

The fourth proportional to 66,203.40, 99,218.70 and 30,660.60 is: 45,950.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,203.40 : 99,218.70 = 30,660.60 : x
  2. Step 2: Convert to fraction form
    66,203.40/99,218.70 = 30,660.60/x
  3. Step 3: Cross multiply
    66,203.40x = 99,218.70 × 30,660.60
  4. Step 4: Simplify right side
    66,203.40x = 3,042,104,873.22
  5. Step 5: Solve for x
    x = 3,042,104,873.22/66,203.40
  6. Step 6: Final answer
    x = 45,950.89

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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.