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Finding the Fourth Proportional to 76,954.51, 106,241.37 and 58,661.61

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Solution

The fourth proportional to 76,954.51, 106,241.37 and 58,661.61 is: 80,986.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,954.51 : 106,241.37 = 58,661.61 : x
  2. Step 2: Convert to fraction form
    76,954.51/106,241.37 = 58,661.61/x
  3. Step 3: Cross multiply
    76,954.51x = 106,241.37 × 58,661.61
  4. Step 4: Simplify right side
    76,954.51x = 6,232,289,812.81
  5. Step 5: Solve for x
    x = 6,232,289,812.81/76,954.51
  6. Step 6: Final answer
    x = 80,986.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.