Home / 82,788.63-124,201.45-30,198.11

Finding the Fourth Proportional to 82,788.63, 124,201.45 and 30,198.11

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Solution

The fourth proportional to 82,788.63, 124,201.45 and 30,198.11 is: 45,303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,788.63 : 124,201.45 = 30,198.11 : x
  2. Step 2: Convert to fraction form
    82,788.63/124,201.45 = 30,198.11/x
  3. Step 3: Cross multiply
    82,788.63x = 124,201.45 × 30,198.11
  4. Step 4: Simplify right side
    82,788.63x = 3,750,648,663.26
  5. Step 5: Solve for x
    x = 3,750,648,663.26/82,788.63
  6. Step 6: Final answer
    x = 45,303.91

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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.