Home / 53,987.94-80,982.41-20,700.09

Finding the Fourth Proportional to 53,987.94, 80,982.41 and 20,700.09

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Solution

The fourth proportional to 53,987.94, 80,982.41 and 20,700.09 is: 31,050.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,987.94 : 80,982.41 = 20,700.09 : x
  2. Step 2: Convert to fraction form
    53,987.94/80,982.41 = 20,700.09/x
  3. Step 3: Cross multiply
    53,987.94x = 80,982.41 × 20,700.09
  4. Step 4: Simplify right side
    53,987.94x = 1,676,343,071.92
  5. Step 5: Solve for x
    x = 1,676,343,071.92/53,987.94
  6. Step 6: Final answer
    x = 31,050.32

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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.