Home / 81,986.81-113,147.67-45,690.70

Finding the Fourth Proportional to 81,986.81, 113,147.67 and 45,690.70

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Solution

The fourth proportional to 81,986.81, 113,147.67 and 45,690.70 is: 63,056.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,986.81 : 113,147.67 = 45,690.70 : x
  2. Step 2: Convert to fraction form
    81,986.81/113,147.67 = 45,690.70/x
  3. Step 3: Cross multiply
    81,986.81x = 113,147.67 × 45,690.70
  4. Step 4: Simplify right side
    81,986.81x = 5,169,795,804.70
  5. Step 5: Solve for x
    x = 5,169,795,804.70/81,986.81
  6. Step 6: Final answer
    x = 63,056.43

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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.