Home / 86,277.83-129,391.20-38,865.51

Finding the Fourth Proportional to 86,277.83, 129,391.20 and 38,865.51

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Solution

The fourth proportional to 86,277.83, 129,391.20 and 38,865.51 is: 58,286.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,277.83 : 129,391.20 = 38,865.51 : x
  2. Step 2: Convert to fraction form
    86,277.83/129,391.20 = 38,865.51/x
  3. Step 3: Cross multiply
    86,277.83x = 129,391.20 × 38,865.51
  4. Step 4: Simplify right side
    86,277.83x = 5,028,854,977.51
  5. Step 5: Solve for x
    x = 5,028,854,977.51/86,277.83
  6. Step 6: Final answer
    x = 58,286.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.