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Finding the Fourth Proportional to 69,504.95, 95,918.30 and 39,288.45

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Solution

The fourth proportional to 69,504.95, 95,918.30 and 39,288.45 is: 54,218.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,504.95 : 95,918.30 = 39,288.45 : x
  2. Step 2: Convert to fraction form
    69,504.95/95,918.30 = 39,288.45/x
  3. Step 3: Cross multiply
    69,504.95x = 95,918.30 × 39,288.45
  4. Step 4: Simplify right side
    69,504.95x = 3,768,481,137.19
  5. Step 5: Solve for x
    x = 3,768,481,137.19/69,504.95
  6. Step 6: Final answer
    x = 54,218.89

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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.