Home / 55,109.70-82,686.15-20,052.90

Finding the Fourth Proportional to 55,109.70, 82,686.15 and 20,052.90

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Solution

The fourth proportional to 55,109.70, 82,686.15 and 20,052.90 is: 30,087.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,109.70 : 82,686.15 = 20,052.90 : x
  2. Step 2: Convert to fraction form
    55,109.70/82,686.15 = 20,052.90/x
  3. Step 3: Cross multiply
    55,109.70x = 82,686.15 × 20,052.90
  4. Step 4: Simplify right side
    55,109.70x = 1,658,097,097.34
  5. Step 5: Solve for x
    x = 1,658,097,097.34/55,109.70
  6. Step 6: Final answer
    x = 30,087.21

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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.