Home / 81,533.81-122,107.38-64,612.41

Finding the Fourth Proportional to 81,533.81, 122,107.38 and 64,612.41

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Solution

The fourth proportional to 81,533.81, 122,107.38 and 64,612.41 is: 96,765.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,533.81 : 122,107.38 = 64,612.41 : x
  2. Step 2: Convert to fraction form
    81,533.81/122,107.38 = 64,612.41/x
  3. Step 3: Cross multiply
    81,533.81x = 122,107.38 × 64,612.41
  4. Step 4: Simplify right side
    81,533.81x = 7,889,652,100.59
  5. Step 5: Solve for x
    x = 7,889,652,100.59/81,533.81
  6. Step 6: Final answer
    x = 96,765.40

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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.