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Finding the Fourth Proportional to 69,773.88, 96,290.48 and 39,971.64

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Solution

The fourth proportional to 69,773.88, 96,290.48 and 39,971.64 is: 55,162.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,773.88 : 96,290.48 = 39,971.64 : x
  2. Step 2: Convert to fraction form
    69,773.88/96,290.48 = 39,971.64/x
  3. Step 3: Cross multiply
    69,773.88x = 96,290.48 × 39,971.64
  4. Step 4: Simplify right side
    69,773.88x = 3,848,888,401.99
  5. Step 5: Solve for x
    x = 3,848,888,401.99/69,773.88
  6. Step 6: Final answer
    x = 55,162.31

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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.