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Finding the Fourth Proportional to 66,284.58, 99,401.22 and 21,899.43

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Solution

The fourth proportional to 66,284.58, 99,401.22 and 21,899.43 is: 32,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,284.58 : 99,401.22 = 21,899.43 : x
  2. Step 2: Convert to fraction form
    66,284.58/99,401.22 = 21,899.43/x
  3. Step 3: Cross multiply
    66,284.58x = 99,401.22 × 21,899.43
  4. Step 4: Simplify right side
    66,284.58x = 2,176,830,059.30
  5. Step 5: Solve for x
    x = 2,176,830,059.30/66,284.58
  6. Step 6: Final answer
    x = 32,840.67

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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.