Home / 55,780.74-76,977-30,286.62

Finding the Fourth Proportional to 55,780.74, 76,977 and 30,286.62

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Solution

The fourth proportional to 55,780.74, 76,977 and 30,286.62 is: 41,795.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,780.74 : 76,977 = 30,286.62 : x
  2. Step 2: Convert to fraction form
    55,780.74/76,977 = 30,286.62/x
  3. Step 3: Cross multiply
    55,780.74x = 76,977 × 30,286.62
  4. Step 4: Simplify right side
    55,780.74x = 2,331,373,147.74
  5. Step 5: Solve for x
    x = 2,331,373,147.74/55,780.74
  6. Step 6: Final answer
    x = 41,795.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.