Home / 76,911.40-106,137.97-42,921.33

Finding the Fourth Proportional to 76,911.40, 106,137.97 and 42,921.33

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Solution

The fourth proportional to 76,911.40, 106,137.97 and 42,921.33 is: 59,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,911.40 : 106,137.97 = 42,921.33 : x
  2. Step 2: Convert to fraction form
    76,911.40/106,137.97 = 42,921.33/x
  3. Step 3: Cross multiply
    76,911.40x = 106,137.97 × 42,921.33
  4. Step 4: Simplify right side
    76,911.40x = 4,555,582,412.51
  5. Step 5: Solve for x
    x = 4,555,582,412.51/76,911.40
  6. Step 6: Final answer
    x = 59,231.56

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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.