Home / 55,131.47-82,620.59-28,783.65

Finding the Fourth Proportional to 55,131.47, 82,620.59 and 28,783.65

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Solution

The fourth proportional to 55,131.47, 82,620.59 and 28,783.65 is: 43,135.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,131.47 : 82,620.59 = 28,783.65 : x
  2. Step 2: Convert to fraction form
    55,131.47/82,620.59 = 28,783.65/x
  3. Step 3: Cross multiply
    55,131.47x = 82,620.59 × 28,783.65
  4. Step 4: Simplify right side
    55,131.47x = 2,378,122,001.44
  5. Step 5: Solve for x
    x = 2,378,122,001.44/55,131.47
  6. Step 6: Final answer
    x = 43,135.48

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1.5x scale

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.