Home / 82,780.58-124,189.38-30,190.07

Finding the Fourth Proportional to 82,780.58, 124,189.38 and 30,190.07

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Solution

The fourth proportional to 82,780.58, 124,189.38 and 30,190.07 is: 45,291.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,780.58 : 124,189.38 = 30,190.07 : x
  2. Step 2: Convert to fraction form
    82,780.58/124,189.38 = 30,190.07/x
  3. Step 3: Cross multiply
    82,780.58x = 124,189.38 × 30,190.07
  4. Step 4: Simplify right side
    82,780.58x = 3,749,285,454.51
  5. Step 5: Solve for x
    x = 3,749,285,454.51/82,780.58
  6. Step 6: Final answer
    x = 45,291.85

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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.