Home / 83,660.21-115,451.24-45,419.81

Finding the Fourth Proportional to 83,660.21, 115,451.24 and 45,419.81

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Solution

The fourth proportional to 83,660.21, 115,451.24 and 45,419.81 is: 62,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,660.21 : 115,451.24 = 45,419.81 : x
  2. Step 2: Convert to fraction form
    83,660.21/115,451.24 = 45,419.81/x
  3. Step 3: Cross multiply
    83,660.21x = 115,451.24 × 45,419.81
  4. Step 4: Simplify right side
    83,660.21x = 5,243,773,485.61
  5. Step 5: Solve for x
    x = 5,243,773,485.61/83,660.21
  6. Step 6: Final answer
    x = 62,679.42

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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.