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Finding the Fourth Proportional to 70,319.88, 105,504.12 and 43,993.26

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Solution

The fourth proportional to 70,319.88, 105,504.12 and 43,993.26 is: 66,005.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,319.88 : 105,504.12 = 43,993.26 : x
  2. Step 2: Convert to fraction form
    70,319.88/105,504.12 = 43,993.26/x
  3. Step 3: Cross multiply
    70,319.88x = 105,504.12 × 43,993.26
  4. Step 4: Simplify right side
    70,319.88x = 4,641,470,182.23
  5. Step 5: Solve for x
    x = 4,641,470,182.23/70,319.88
  6. Step 6: Final answer
    x = 66,005.09

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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.