Home / 82,919.80-124,428.30-30,334.60

Finding the Fourth Proportional to 82,919.80, 124,428.30 and 30,334.60

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Solution

The fourth proportional to 82,919.80, 124,428.30 and 30,334.60 is: 45,519.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,919.80 : 124,428.30 = 30,334.60 : x
  2. Step 2: Convert to fraction form
    82,919.80/124,428.30 = 30,334.60/x
  3. Step 3: Cross multiply
    82,919.80x = 124,428.30 × 30,334.60
  4. Step 4: Simplify right side
    82,919.80x = 3,774,482,709.18
  5. Step 5: Solve for x
    x = 3,774,482,709.18/82,919.80
  6. Step 6: Final answer
    x = 45,519.68

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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.