Home / 86,981.44-120,032.40-51,163.60

Finding the Fourth Proportional to 86,981.44, 120,032.40 and 51,163.60

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Solution

The fourth proportional to 86,981.44, 120,032.40 and 51,163.60 is: 70,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,981.44 : 120,032.40 = 51,163.60 : x
  2. Step 2: Convert to fraction form
    86,981.44/120,032.40 = 51,163.60/x
  3. Step 3: Cross multiply
    86,981.44x = 120,032.40 × 51,163.60
  4. Step 4: Simplify right side
    86,981.44x = 6,141,289,700.64
  5. Step 5: Solve for x
    x = 6,141,289,700.64/86,981.44
  6. Step 6: Final answer
    x = 70,604.60

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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.