Home / 66,115.89-99,188.51-21,740.85

Finding the Fourth Proportional to 66,115.89, 99,188.51 and 21,740.85

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Solution

The fourth proportional to 66,115.89, 99,188.51 and 21,740.85 is: 32,616.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,115.89 : 99,188.51 = 21,740.85 : x
  2. Step 2: Convert to fraction form
    66,115.89/99,188.51 = 21,740.85/x
  3. Step 3: Cross multiply
    66,115.89x = 99,188.51 × 21,740.85
  4. Step 4: Simplify right side
    66,115.89x = 2,156,442,408.93
  5. Step 5: Solve for x
    x = 2,156,442,408.93/66,115.89
  6. Step 6: Final answer
    x = 32,616.10

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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.