Home / 80,630,020.20-121,243,628.70-67,491,690.60

Finding the Fourth Proportional to 80,630,020.20, 121,243,628.70 and 67,491,690.60

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Solution

The fourth proportional to 80,630,020.20, 121,243,628.70 and 67,491,690.60 is: 101,487,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,630,020.20 : 121,243,628.70 = 67,491,690.60 : x
  2. Step 2: Convert to fraction form
    80,630,020.20/121,243,628.70 = 67,491,690.60/x
  3. Step 3: Cross multiply
    80,630,020.20x = 121,243,628.70 × 67,491,690.60
  4. Step 4: Simplify right side
    80,630,020.20x = 8,182,937,475,441,680
  5. Step 5: Solve for x
    x = 8,182,937,475,441,680/80,630,020.20
  6. Step 6: Final answer
    x = 101,487,478.92

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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.