Home / 72,615,723.20-108,923,584.80-67,072,990.40

Finding the Fourth Proportional to 72,615,723.20, 108,923,584.80 and 67,072,990.40

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Solution

The fourth proportional to 72,615,723.20, 108,923,584.80 and 67,072,990.40 is: 100,609,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,615,723.20 : 108,923,584.80 = 67,072,990.40 : x
  2. Step 2: Convert to fraction form
    72,615,723.20/108,923,584.80 = 67,072,990.40/x
  3. Step 3: Cross multiply
    72,615,723.20x = 108,923,584.80 × 67,072,990.40
  4. Step 4: Simplify right side
    72,615,723.20x = 7,305,830,557,623,986
  5. Step 5: Solve for x
    x = 7,305,830,557,623,986/72,615,723.20
  6. Step 6: Final answer
    x = 100,609,485.60

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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.