Home / 70,436.32-105,653.68-17,128.60

Finding the Fourth Proportional to 70,436.32, 105,653.68 and 17,128.60

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Solution

The fourth proportional to 70,436.32, 105,653.68 and 17,128.60 is: 25,692.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,436.32 : 105,653.68 = 17,128.60 : x
  2. Step 2: Convert to fraction form
    70,436.32/105,653.68 = 17,128.60/x
  3. Step 3: Cross multiply
    70,436.32x = 105,653.68 × 17,128.60
  4. Step 4: Simplify right side
    70,436.32x = 1,809,699,623.25
  5. Step 5: Solve for x
    x = 1,809,699,623.25/70,436.32
  6. Step 6: Final answer
    x = 25,692.71

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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.