Home / 66,141.16-91,310.34-51,000.64

Finding the Fourth Proportional to 66,141.16, 91,310.34 and 51,000.64

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Solution

The fourth proportional to 66,141.16, 91,310.34 and 51,000.64 is: 70,408.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,141.16 : 91,310.34 = 51,000.64 : x
  2. Step 2: Convert to fraction form
    66,141.16/91,310.34 = 51,000.64/x
  3. Step 3: Cross multiply
    66,141.16x = 91,310.34 × 51,000.64
  4. Step 4: Simplify right side
    66,141.16x = 4,656,885,778.62
  5. Step 5: Solve for x
    x = 4,656,885,778.62/66,141.16
  6. Step 6: Final answer
    x = 70,408.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.