Home / 82,977.21-124,466.27-20,647.71

Finding the Fourth Proportional to 82,977.21, 124,466.27 and 20,647.71

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Solution

The fourth proportional to 82,977.21, 124,466.27 and 20,647.71 is: 30,971.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,977.21 : 124,466.27 = 20,647.71 : x
  2. Step 2: Convert to fraction form
    82,977.21/124,466.27 = 20,647.71/x
  3. Step 3: Cross multiply
    82,977.21x = 124,466.27 × 20,647.71
  4. Step 4: Simplify right side
    82,977.21x = 2,569,943,344.50
  5. Step 5: Solve for x
    x = 2,569,943,344.50/82,977.21
  6. Step 6: Final answer
    x = 30,971.68

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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.