Home / 66,146.09-99,232.81-21,775.51

Finding the Fourth Proportional to 66,146.09, 99,232.81 and 21,775.51

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Solution

The fourth proportional to 66,146.09, 99,232.81 and 21,775.51 is: 32,667.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,146.09 : 99,232.81 = 21,775.51 : x
  2. Step 2: Convert to fraction form
    66,146.09/99,232.81 = 21,775.51/x
  3. Step 3: Cross multiply
    66,146.09x = 99,232.81 × 21,775.51
  4. Step 4: Simplify right side
    66,146.09x = 2,160,844,441.44
  5. Step 5: Solve for x
    x = 2,160,844,441.44/66,146.09
  6. Step 6: Final answer
    x = 32,667.76

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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.