Home / 80,643,695.20-120,888,128.40-26,763,272.80

Finding the Fourth Proportional to 80,643,695.20, 120,888,128.40 and 26,763,272.80

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Solution

The fourth proportional to 80,643,695.20, 120,888,128.40 and 26,763,272.80 is: 40,119,217.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,643,695.20 : 120,888,128.40 = 26,763,272.80 : x
  2. Step 2: Convert to fraction form
    80,643,695.20/120,888,128.40 = 26,763,272.80/x
  3. Step 3: Cross multiply
    80,643,695.20x = 120,888,128.40 × 26,763,272.80
  4. Step 4: Simplify right side
    80,643,695.20x = 3,235,361,958,650,628
  5. Step 5: Solve for x
    x = 3,235,361,958,650,628/80,643,695.20
  6. Step 6: Final answer
    x = 40,119,217.64

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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.