Home / 81,423,999.80-122,122,002.90-30,279,692.60

Finding the Fourth Proportional to 81,423,999.80, 122,122,002.90 and 30,279,692.60

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Solution

The fourth proportional to 81,423,999.80, 122,122,002.90 and 30,279,692.60 is: 45,414,333.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,423,999.80 : 122,122,002.90 = 30,279,692.60 : x
  2. Step 2: Convert to fraction form
    81,423,999.80/122,122,002.90 = 30,279,692.60/x
  3. Step 3: Cross multiply
    81,423,999.80x = 122,122,002.90 × 30,279,692.60
  4. Step 4: Simplify right side
    81,423,999.80x = 3,697,816,707,508,309
  5. Step 5: Solve for x
    x = 3,697,816,707,508,309/81,423,999.80
  6. Step 6: Final answer
    x = 45,414,333.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.