Home / 66,811.73-91,990.37-56,719.25

Finding the Fourth Proportional to 66,811.73, 91,990.37 and 56,719.25

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Solution

The fourth proportional to 66,811.73, 91,990.37 and 56,719.25 is: 78,094.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,811.73 : 91,990.37 = 56,719.25 : x
  2. Step 2: Convert to fraction form
    66,811.73/91,990.37 = 56,719.25/x
  3. Step 3: Cross multiply
    66,811.73x = 91,990.37 × 56,719.25
  4. Step 4: Simplify right side
    66,811.73x = 5,217,624,510.03
  5. Step 5: Solve for x
    x = 5,217,624,510.03/66,811.73
  6. Step 6: Final answer
    x = 78,094.44

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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.