Home / 55,172.07-82,685.21-20,078.01

Finding the Fourth Proportional to 55,172.07, 82,685.21 and 20,078.01

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Solution

The fourth proportional to 55,172.07, 82,685.21 and 20,078.01 is: 30,090.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,172.07 : 82,685.21 = 20,078.01 : x
  2. Step 2: Convert to fraction form
    55,172.07/82,685.21 = 20,078.01/x
  3. Step 3: Cross multiply
    55,172.07x = 82,685.21 × 20,078.01
  4. Step 4: Simplify right side
    55,172.07x = 1,660,154,372.84
  5. Step 5: Solve for x
    x = 1,660,154,372.84/55,172.07
  6. Step 6: Final answer
    x = 30,090.49

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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.