Home / 56,481.45-77,945.14-30,986.20

Finding the Fourth Proportional to 56,481.45, 77,945.14 and 30,986.20

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Solution

The fourth proportional to 56,481.45, 77,945.14 and 30,986.20 is: 42,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,481.45 : 77,945.14 = 30,986.20 : x
  2. Step 2: Convert to fraction form
    56,481.45/77,945.14 = 30,986.20/x
  3. Step 3: Cross multiply
    56,481.45x = 77,945.14 × 30,986.20
  4. Step 4: Simplify right side
    56,481.45x = 2,415,223,220.49
  5. Step 5: Solve for x
    x = 2,415,223,220.49/56,481.45
  6. Step 6: Final answer
    x = 42,761.35

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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.