Home / 70,895.05-106,342.56-20,971.26

Finding the Fourth Proportional to 70,895.05, 106,342.56 and 20,971.26

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Solution

The fourth proportional to 70,895.05, 106,342.56 and 20,971.26 is: 31,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,895.05 : 106,342.56 = 20,971.26 : x
  2. Step 2: Convert to fraction form
    70,895.05/106,342.56 = 20,971.26/x
  3. Step 3: Cross multiply
    70,895.05x = 106,342.56 × 20,971.26
  4. Step 4: Simplify right side
    70,895.05x = 2,230,137,474.83
  5. Step 5: Solve for x
    x = 2,230,137,474.83/70,895.05
  6. Step 6: Final answer
    x = 31,456.89

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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.