Home / 80,937,047.80-121,405,571.70-72,433,991.80

Finding the Fourth Proportional to 80,937,047.80, 121,405,571.70 and 72,433,991.80

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Solution

The fourth proportional to 80,937,047.80, 121,405,571.70 and 72,433,991.80 is: 108,650,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937,047.80 : 121,405,571.70 = 72,433,991.80 : x
  2. Step 2: Convert to fraction form
    80,937,047.80/121,405,571.70 = 72,433,991.80/x
  3. Step 3: Cross multiply
    80,937,047.80x = 121,405,571.70 × 72,433,991.80
  4. Step 4: Simplify right side
    80,937,047.80x = 8,793,890,184,992,112
  5. Step 5: Solve for x
    x = 8,793,890,184,992,112/80,937,047.80
  6. Step 6: Final answer
    x = 108,650,987.70

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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.