Home / 80,888,911.80-121,333,367.70-67,436,811.50

Finding the Fourth Proportional to 80,888,911.80, 121,333,367.70 and 67,436,811.50

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Solution

The fourth proportional to 80,888,911.80, 121,333,367.70 and 67,436,811.50 is: 101,155,217.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,888,911.80 : 121,333,367.70 = 67,436,811.50 : x
  2. Step 2: Convert to fraction form
    80,888,911.80/121,333,367.70 = 67,436,811.50/x
  3. Step 3: Cross multiply
    80,888,911.80x = 121,333,367.70 × 67,436,811.50
  4. Step 4: Simplify right side
    80,888,911.80x = 8,182,335,446,245,089
  5. Step 5: Solve for x
    x = 8,182,335,446,245,089/80,888,911.80
  6. Step 6: Final answer
    x = 101,155,217.25

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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.