Home / 81,522.36-122,288.76-28,219.47

Finding the Fourth Proportional to 81,522.36, 122,288.76 and 28,219.47

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Solution

The fourth proportional to 81,522.36, 122,288.76 and 28,219.47 is: 42,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,522.36 : 122,288.76 = 28,219.47 : x
  2. Step 2: Convert to fraction form
    81,522.36/122,288.76 = 28,219.47/x
  3. Step 3: Cross multiply
    81,522.36x = 122,288.76 × 28,219.47
  4. Step 4: Simplify right side
    81,522.36x = 3,450,923,994.16
  5. Step 5: Solve for x
    x = 3,450,923,994.16/81,522.36
  6. Step 6: Final answer
    x = 42,331.01

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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.