Home / 80,007,947.20-120,011,920.80-54,179,914.60

Finding the Fourth Proportional to 80,007,947.20, 120,011,920.80 and 54,179,914.60

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Solution

The fourth proportional to 80,007,947.20, 120,011,920.80 and 54,179,914.60 is: 81,269,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,007,947.20 : 120,011,920.80 = 54,179,914.60 : x
  2. Step 2: Convert to fraction form
    80,007,947.20/120,011,920.80 = 54,179,914.60/x
  3. Step 3: Cross multiply
    80,007,947.20x = 120,011,920.80 × 54,179,914.60
  4. Step 4: Simplify right side
    80,007,947.20x = 6,502,235,619,925,964
  5. Step 5: Solve for x
    x = 6,502,235,619,925,964/80,007,947.20
  6. Step 6: Final answer
    x = 81,269,871.90

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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.