Home / 80,120,404.20-120,180,606.30-28,983,970.20

Finding the Fourth Proportional to 80,120,404.20, 120,180,606.30 and 28,983,970.20

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Solution

The fourth proportional to 80,120,404.20, 120,180,606.30 and 28,983,970.20 is: 43,475,955.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120,404.20 : 120,180,606.30 = 28,983,970.20 : x
  2. Step 2: Convert to fraction form
    80,120,404.20/120,180,606.30 = 28,983,970.20/x
  3. Step 3: Cross multiply
    80,120,404.20x = 120,180,606.30 × 28,983,970.20
  4. Step 4: Simplify right side
    80,120,404.20x = 3,483,311,111,617,132
  5. Step 5: Solve for x
    x = 3,483,311,111,617,132/80,120,404.20
  6. Step 6: Final answer
    x = 43,475,955.30

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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.