Home / 71,289.90-106,931.34-17,982.18

Finding the Fourth Proportional to 71,289.90, 106,931.34 and 17,982.18

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Solution

The fourth proportional to 71,289.90, 106,931.34 and 17,982.18 is: 26,972.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,289.90 : 106,931.34 = 17,982.18 : x
  2. Step 2: Convert to fraction form
    71,289.90/106,931.34 = 17,982.18/x
  3. Step 3: Cross multiply
    71,289.90x = 106,931.34 × 17,982.18
  4. Step 4: Simplify right side
    71,289.90x = 1,922,858,603.52
  5. Step 5: Solve for x
    x = 1,922,858,603.52/71,289.90
  6. Step 6: Final answer
    x = 26,972.38

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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.