Home / 66,235.21-99,361.01-21,259.55

Finding the Fourth Proportional to 66,235.21, 99,361.01 and 21,259.55

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Solution

The fourth proportional to 66,235.21, 99,361.01 and 21,259.55 is: 31,891.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,235.21 : 99,361.01 = 21,259.55 : x
  2. Step 2: Convert to fraction form
    66,235.21/99,361.01 = 21,259.55/x
  3. Step 3: Cross multiply
    66,235.21x = 99,361.01 × 21,259.55
  4. Step 4: Simplify right side
    66,235.21x = 2,112,370,360.15
  5. Step 5: Solve for x
    x = 2,112,370,360.15/66,235.21
  6. Step 6: Final answer
    x = 31,891.96

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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.