Home / 66,507.21-99,777.42-19,760.09

Finding the Fourth Proportional to 66,507.21, 99,777.42 and 19,760.09

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Solution

The fourth proportional to 66,507.21, 99,777.42 and 19,760.09 is: 29,645.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,507.21 : 99,777.42 = 19,760.09 : x
  2. Step 2: Convert to fraction form
    66,507.21/99,777.42 = 19,760.09/x
  3. Step 3: Cross multiply
    66,507.21x = 99,777.42 × 19,760.09
  4. Step 4: Simplify right side
    66,507.21x = 1,971,610,300.28
  5. Step 5: Solve for x
    x = 1,971,610,300.28/66,507.21
  6. Step 6: Final answer
    x = 29,645.06

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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.