Home / 66,154.89-99,211.41-21,771.75

Finding the Fourth Proportional to 66,154.89, 99,211.41 and 21,771.75

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Solution

The fourth proportional to 66,154.89, 99,211.41 and 21,771.75 is: 32,650.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,154.89 : 99,211.41 = 21,771.75 : x
  2. Step 2: Convert to fraction form
    66,154.89/99,211.41 = 21,771.75/x
  3. Step 3: Cross multiply
    66,154.89x = 99,211.41 × 21,771.75
  4. Step 4: Simplify right side
    66,154.89x = 2,160,006,015.67
  5. Step 5: Solve for x
    x = 2,160,006,015.67/66,154.89
  6. Step 6: Final answer
    x = 32,650.74

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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.