Home / 82,784.40-124,106.40-30,163.20

Finding the Fourth Proportional to 82,784.40, 124,106.40 and 30,163.20

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Solution

The fourth proportional to 82,784.40, 124,106.40 and 30,163.20 is: 45,219.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,784.40 : 124,106.40 = 30,163.20 : x
  2. Step 2: Convert to fraction form
    82,784.40/124,106.40 = 30,163.20/x
  3. Step 3: Cross multiply
    82,784.40x = 124,106.40 × 30,163.20
  4. Step 4: Simplify right side
    82,784.40x = 3,743,446,164.48
  5. Step 5: Solve for x
    x = 3,743,446,164.48/82,784.40
  6. Step 6: Final answer
    x = 45,219.22

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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.