Home / 30,267,286.20-45,400,929.30-21,020,212.80

Finding the Fourth Proportional to 30,267,286.20, 45,400,929.30 and 21,020,212.80

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Solution

The fourth proportional to 30,267,286.20, 45,400,929.30 and 21,020,212.80 is: 31,530,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,267,286.20 : 45,400,929.30 = 21,020,212.80 : x
  2. Step 2: Convert to fraction form
    30,267,286.20/45,400,929.30 = 21,020,212.80/x
  3. Step 3: Cross multiply
    30,267,286.20x = 45,400,929.30 × 21,020,212.80
  4. Step 4: Simplify right side
    30,267,286.20x = 954,337,195,203,755
  5. Step 5: Solve for x
    x = 954,337,195,203,755/30,267,286.20
  6. Step 6: Final answer
    x = 31,530,319.20

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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.