Home / 86,986.55-120,030.21-51,163.49

Finding the Fourth Proportional to 86,986.55, 120,030.21 and 51,163.49

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Solution

The fourth proportional to 86,986.55, 120,030.21 and 51,163.49 is: 70,599.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,986.55 : 120,030.21 = 51,163.49 : x
  2. Step 2: Convert to fraction form
    86,986.55/120,030.21 = 51,163.49/x
  3. Step 3: Cross multiply
    86,986.55x = 120,030.21 × 51,163.49
  4. Step 4: Simplify right side
    86,986.55x = 6,141,164,749.11
  5. Step 5: Solve for x
    x = 6,141,164,749.11/86,986.55
  6. Step 6: Final answer
    x = 70,599.01

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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.