Home / 81,982.10-122,973.18-63,289.42

Finding the Fourth Proportional to 81,982.10, 122,973.18 and 63,289.42

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Solution

The fourth proportional to 81,982.10, 122,973.18 and 63,289.42 is: 94,934.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,982.10 : 122,973.18 = 63,289.42 : x
  2. Step 2: Convert to fraction form
    81,982.10/122,973.18 = 63,289.42/x
  3. Step 3: Cross multiply
    81,982.10x = 122,973.18 × 63,289.42
  4. Step 4: Simplify right side
    81,982.10x = 7,782,901,237.76
  5. Step 5: Solve for x
    x = 7,782,901,237.76/81,982.10
  6. Step 6: Final answer
    x = 94,934.15

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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.