Home / 86,938.52-120,048.70-55,163.80

Finding the Fourth Proportional to 86,938.52, 120,048.70 and 55,163.80

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Solution

The fourth proportional to 86,938.52, 120,048.70 and 55,163.80 is: 76,172.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,938.52 : 120,048.70 = 55,163.80 : x
  2. Step 2: Convert to fraction form
    86,938.52/120,048.70 = 55,163.80/x
  3. Step 3: Cross multiply
    86,938.52x = 120,048.70 × 55,163.80
  4. Step 4: Simplify right side
    86,938.52x = 6,622,342,477.06
  5. Step 5: Solve for x
    x = 6,622,342,477.06/86,938.52
  6. Step 6: Final answer
    x = 76,172.71

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1.5x scale

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.