Home / 82,974.40-124,461.60-30,389.20

Finding the Fourth Proportional to 82,974.40, 124,461.60 and 30,389.20

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Solution

The fourth proportional to 82,974.40, 124,461.60 and 30,389.20 is: 45,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,974.40 : 124,461.60 = 30,389.20 : x
  2. Step 2: Convert to fraction form
    82,974.40/124,461.60 = 30,389.20/x
  3. Step 3: Cross multiply
    82,974.40x = 124,461.60 × 30,389.20
  4. Step 4: Simplify right side
    82,974.40x = 3,782,288,454.72
  5. Step 5: Solve for x
    x = 3,782,288,454.72/82,974.40
  6. Step 6: Final answer
    x = 45,583.80

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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.