Home / 77,780.77-116,645.21-30,383.58

Finding the Fourth Proportional to 77,780.77, 116,645.21 and 30,383.58

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Solution

The fourth proportional to 77,780.77, 116,645.21 and 30,383.58 is: 45,565.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,780.77 : 116,645.21 = 30,383.58 : x
  2. Step 2: Convert to fraction form
    77,780.77/116,645.21 = 30,383.58/x
  3. Step 3: Cross multiply
    77,780.77x = 116,645.21 × 30,383.58
  4. Step 4: Simplify right side
    77,780.77x = 3,544,099,069.65
  5. Step 5: Solve for x
    x = 3,544,099,069.65/77,780.77
  6. Step 6: Final answer
    x = 45,565.24

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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.