Home / 72,186.38-99,620.30-40,355.27

Finding the Fourth Proportional to 72,186.38, 99,620.30 and 40,355.27

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Solution

The fourth proportional to 72,186.38, 99,620.30 and 40,355.27 is: 55,692.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,186.38 : 99,620.30 = 40,355.27 : x
  2. Step 2: Convert to fraction form
    72,186.38/99,620.30 = 40,355.27/x
  3. Step 3: Cross multiply
    72,186.38x = 99,620.30 × 40,355.27
  4. Step 4: Simplify right side
    72,186.38x = 4,020,203,902.20
  5. Step 5: Solve for x
    x = 4,020,203,902.20/72,186.38
  6. Step 6: Final answer
    x = 55,692.00

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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.