Home / 80,120,007.20-120,180,010.80-55,886,297.60

Finding the Fourth Proportional to 80,120,007.20, 120,180,010.80 and 55,886,297.60

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Solution

The fourth proportional to 80,120,007.20, 120,180,010.80 and 55,886,297.60 is: 83,829,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120,007.20 : 120,180,010.80 = 55,886,297.60 : x
  2. Step 2: Convert to fraction form
    80,120,007.20/120,180,010.80 = 55,886,297.60/x
  3. Step 3: Cross multiply
    80,120,007.20x = 120,180,010.80 × 55,886,297.60
  4. Step 4: Simplify right side
    80,120,007.20x = 6,716,415,849,140,014
  5. Step 5: Solve for x
    x = 6,716,415,849,140,014/80,120,007.20
  6. Step 6: Final answer
    x = 83,829,446.40

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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.