Home / 76,768.12-105,936.82-42,774.85

Finding the Fourth Proportional to 76,768.12, 105,936.82 and 42,774.85

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Solution

The fourth proportional to 76,768.12, 105,936.82 and 42,774.85 is: 59,027.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,768.12 : 105,936.82 = 42,774.85 : x
  2. Step 2: Convert to fraction form
    76,768.12/105,936.82 = 42,774.85/x
  3. Step 3: Cross multiply
    76,768.12x = 105,936.82 × 42,774.85
  4. Step 4: Simplify right side
    76,768.12x = 4,531,431,584.98
  5. Step 5: Solve for x
    x = 4,531,431,584.98/76,768.12
  6. Step 6: Final answer
    x = 59,027.52

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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.