Home / 72,222.66-99,668.64-40,395.06

Finding the Fourth Proportional to 72,222.66, 99,668.64 and 40,395.06

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Solution

The fourth proportional to 72,222.66, 99,668.64 and 40,395.06 is: 55,745.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,222.66 : 99,668.64 = 40,395.06 : x
  2. Step 2: Convert to fraction form
    72,222.66/99,668.64 = 40,395.06/x
  3. Step 3: Cross multiply
    72,222.66x = 99,668.64 × 40,395.06
  4. Step 4: Simplify right side
    72,222.66x = 4,026,120,692.92
  5. Step 5: Solve for x
    x = 4,026,120,692.92/72,222.66
  6. Step 6: Final answer
    x = 55,745.95

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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.