Home / 77,069.25-115,603.88-21,665.25

Finding the Fourth Proportional to 77,069.25, 115,603.88 and 21,665.25

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Solution

The fourth proportional to 77,069.25, 115,603.88 and 21,665.25 is: 32,497.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,069.25 : 115,603.88 = 21,665.25 : x
  2. Step 2: Convert to fraction form
    77,069.25/115,603.88 = 21,665.25/x
  3. Step 3: Cross multiply
    77,069.25x = 115,603.88 × 21,665.25
  4. Step 4: Simplify right side
    77,069.25x = 2,504,586,852.84
  5. Step 5: Solve for x
    x = 2,504,586,852.84/77,069.25
  6. Step 6: Final answer
    x = 32,497.88

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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.