Home / 71,972.77-99,322.43-40,141.67

Finding the Fourth Proportional to 71,972.77, 99,322.43 and 40,141.67

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Solution

The fourth proportional to 71,972.77, 99,322.43 and 40,141.67 is: 55,395.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,972.77 : 99,322.43 = 40,141.67 : x
  2. Step 2: Convert to fraction form
    71,972.77/99,322.43 = 40,141.67/x
  3. Step 3: Cross multiply
    71,972.77x = 99,322.43 × 40,141.67
  4. Step 4: Simplify right side
    71,972.77x = 3,986,968,367.11
  5. Step 5: Solve for x
    x = 3,986,968,367.11/71,972.77
  6. Step 6: Final answer
    x = 55,395.51

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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.