Home / 66,174.12-91,310.58-39,317.76

Finding the Fourth Proportional to 66,174.12, 91,310.58 and 39,317.76

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Solution

The fourth proportional to 66,174.12, 91,310.58 and 39,317.76 is: 54,252.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,174.12 : 91,310.58 = 39,317.76 : x
  2. Step 2: Convert to fraction form
    66,174.12/91,310.58 = 39,317.76/x
  3. Step 3: Cross multiply
    66,174.12x = 91,310.58 × 39,317.76
  4. Step 4: Simplify right side
    66,174.12x = 3,590,127,469.90
  5. Step 5: Solve for x
    x = 3,590,127,469.90/66,174.12
  6. Step 6: Final answer
    x = 54,252.74

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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.