Home / 66,284.70-99,442.61-21,911.45

Finding the Fourth Proportional to 66,284.70, 99,442.61 and 21,911.45

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Solution

The fourth proportional to 66,284.70, 99,442.61 and 21,911.45 is: 32,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,284.70 : 99,442.61 = 21,911.45 : x
  2. Step 2: Convert to fraction form
    66,284.70/99,442.61 = 21,911.45/x
  3. Step 3: Cross multiply
    66,284.70x = 99,442.61 × 21,911.45
  4. Step 4: Simplify right side
    66,284.70x = 2,178,931,776.88
  5. Step 5: Solve for x
    x = 2,178,931,776.88/66,284.70
  6. Step 6: Final answer
    x = 32,872.32

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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.