Home / 81,735.18-122,622.53-28,419.46

Finding the Fourth Proportional to 81,735.18, 122,622.53 and 28,419.46

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Solution

The fourth proportional to 81,735.18, 122,622.53 and 28,419.46 is: 42,636.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,735.18 : 122,622.53 = 28,419.46 : x
  2. Step 2: Convert to fraction form
    81,735.18/122,622.53 = 28,419.46/x
  3. Step 3: Cross multiply
    81,735.18x = 122,622.53 × 28,419.46
  4. Step 4: Simplify right side
    81,735.18x = 3,484,866,257.47
  5. Step 5: Solve for x
    x = 3,484,866,257.47/81,735.18
  6. Step 6: Final answer
    x = 42,636.06

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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.