Home / 77,171.21-115,761.29-29,786.55

Finding the Fourth Proportional to 77,171.21, 115,761.29 and 29,786.55

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Solution

The fourth proportional to 77,171.21, 115,761.29 and 29,786.55 is: 44,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,171.21 : 115,761.29 = 29,786.55 : x
  2. Step 2: Convert to fraction form
    77,171.21/115,761.29 = 29,786.55/x
  3. Step 3: Cross multiply
    77,171.21x = 115,761.29 × 29,786.55
  4. Step 4: Simplify right side
    77,171.21x = 3,448,129,303.72
  5. Step 5: Solve for x
    x = 3,448,129,303.72/77,171.21
  6. Step 6: Final answer
    x = 44,681.55

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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.