Home / 80,668,281.60-121,002,422.40-20,084,007.60

Finding the Fourth Proportional to 80,668,281.60, 121,002,422.40 and 20,084,007.60

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Solution

The fourth proportional to 80,668,281.60, 121,002,422.40 and 20,084,007.60 is: 30,126,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,668,281.60 : 121,002,422.40 = 20,084,007.60 : x
  2. Step 2: Convert to fraction form
    80,668,281.60/121,002,422.40 = 20,084,007.60/x
  3. Step 3: Cross multiply
    80,668,281.60x = 121,002,422.40 × 20,084,007.60
  4. Step 4: Simplify right side
    80,668,281.60x = 2,430,213,571,100,010.50
  5. Step 5: Solve for x
    x = 2,430,213,571,100,010.50/80,668,281.60
  6. Step 6: Final answer
    x = 30,126,011.40

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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.