Home / 58,287.69-87,422.21-20,840.78

Finding the Fourth Proportional to 58,287.69, 87,422.21 and 20,840.78

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Solution

The fourth proportional to 58,287.69, 87,422.21 and 20,840.78 is: 31,257.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,287.69 : 87,422.21 = 20,840.78 : x
  2. Step 2: Convert to fraction form
    58,287.69/87,422.21 = 20,840.78/x
  3. Step 3: Cross multiply
    58,287.69x = 87,422.21 × 20,840.78
  4. Step 4: Simplify right side
    58,287.69x = 1,821,946,504.41
  5. Step 5: Solve for x
    x = 1,821,946,504.41/58,287.69
  6. Step 6: Final answer
    x = 31,257.83

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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.