Home / 81,289.73-121,776.78-59,903.59

Finding the Fourth Proportional to 81,289.73, 121,776.78 and 59,903.59

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Solution

The fourth proportional to 81,289.73, 121,776.78 and 59,903.59 is: 89,739.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,289.73 : 121,776.78 = 59,903.59 : x
  2. Step 2: Convert to fraction form
    81,289.73/121,776.78 = 59,903.59/x
  3. Step 3: Cross multiply
    81,289.73x = 121,776.78 × 59,903.59
  4. Step 4: Simplify right side
    81,289.73x = 7,294,866,300.64
  5. Step 5: Solve for x
    x = 7,294,866,300.64/81,289.73
  6. Step 6: Final answer
    x = 89,739.09

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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.