Home / 70,078.43-105,131.50-25,705.60

Finding the Fourth Proportional to 70,078.43, 105,131.50 and 25,705.60

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Solution

The fourth proportional to 70,078.43, 105,131.50 and 25,705.60 is: 38,563.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,078.43 : 105,131.50 = 25,705.60 : x
  2. Step 2: Convert to fraction form
    70,078.43/105,131.50 = 25,705.60/x
  3. Step 3: Cross multiply
    70,078.43x = 105,131.50 × 25,705.60
  4. Step 4: Simplify right side
    70,078.43x = 2,702,467,959.31
  5. Step 5: Solve for x
    x = 2,702,467,959.31/70,078.43
  6. Step 6: Final answer
    x = 38,563.48

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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.