Home / 80,911,793.20-121,409,680.20-35,478,180.40

Finding the Fourth Proportional to 80,911,793.20, 121,409,680.20 and 35,478,180.40

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Solution

The fourth proportional to 80,911,793.20, 121,409,680.20 and 35,478,180.40 is: 53,235,682.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,911,793.20 : 121,409,680.20 = 35,478,180.40 : x
  2. Step 2: Convert to fraction form
    80,911,793.20/121,409,680.20 = 35,478,180.40/x
  3. Step 3: Cross multiply
    80,911,793.20x = 121,409,680.20 × 35,478,180.40
  4. Step 4: Simplify right side
    80,911,793.20x = 4,307,394,536,441,908
  5. Step 5: Solve for x
    x = 4,307,394,536,441,908/80,911,793.20
  6. Step 6: Final answer
    x = 53,235,682.54

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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.