Home / 71,898,511.20-107,847,766.80-68,213,853.60

Finding the Fourth Proportional to 71,898,511.20, 107,847,766.80 and 68,213,853.60

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Solution

The fourth proportional to 71,898,511.20, 107,847,766.80 and 68,213,853.60 is: 102,320,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,898,511.20 : 107,847,766.80 = 68,213,853.60 : x
  2. Step 2: Convert to fraction form
    71,898,511.20/107,847,766.80 = 68,213,853.60/x
  3. Step 3: Cross multiply
    71,898,511.20x = 107,847,766.80 × 68,213,853.60
  4. Step 4: Simplify right side
    71,898,511.20x = 7,356,711,775,582,140
  5. Step 5: Solve for x
    x = 7,356,711,775,582,140/71,898,511.20
  6. Step 6: Final answer
    x = 102,320,780.40

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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.