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Finding the Fourth Proportional to 66,228.57, 99,352.71 and 21,860.01

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Solution

The fourth proportional to 66,228.57, 99,352.71 and 21,860.01 is: 32,793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,228.57 : 99,352.71 = 21,860.01 : x
  2. Step 2: Convert to fraction form
    66,228.57/99,352.71 = 21,860.01/x
  3. Step 3: Cross multiply
    66,228.57x = 99,352.71 × 21,860.01
  4. Step 4: Simplify right side
    66,228.57x = 2,171,851,234.13
  5. Step 5: Solve for x
    x = 2,171,851,234.13/66,228.57
  6. Step 6: Final answer
    x = 32,793.27

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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.