Home / 80,120,005.20-120,180,007.80-55,886,295.60

Finding the Fourth Proportional to 80,120,005.20, 120,180,007.80 and 55,886,295.60

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Solution

The fourth proportional to 80,120,005.20, 120,180,007.80 and 55,886,295.60 is: 83,829,443.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120,005.20 : 120,180,007.80 = 55,886,295.60 : x
  2. Step 2: Convert to fraction form
    80,120,005.20/120,180,007.80 = 55,886,295.60/x
  3. Step 3: Cross multiply
    80,120,005.20x = 120,180,007.80 × 55,886,295.60
  4. Step 4: Simplify right side
    80,120,005.20x = 6,716,415,441,121,106
  5. Step 5: Solve for x
    x = 6,716,415,441,121,106/80,120,005.20
  6. Step 6: Final answer
    x = 83,829,443.40

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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.