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Finding the Fourth Proportional to 66,028.34, 99,032.78 and 21,659.78

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Solution

The fourth proportional to 66,028.34, 99,032.78 and 21,659.78 is: 32,486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,028.34 : 99,032.78 = 21,659.78 : x
  2. Step 2: Convert to fraction form
    66,028.34/99,032.78 = 21,659.78/x
  3. Step 3: Cross multiply
    66,028.34x = 99,032.78 × 21,659.78
  4. Step 4: Simplify right side
    66,028.34x = 2,145,028,227.59
  5. Step 5: Solve for x
    x = 2,145,028,227.59/66,028.34
  6. Step 6: Final answer
    x = 32,486.48

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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.