Home / 80,689,511.20-120,960,783.60-29,559,200.80

Finding the Fourth Proportional to 80,689,511.20, 120,960,783.60 and 29,559,200.80

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Solution

The fourth proportional to 80,689,511.20, 120,960,783.60 and 29,559,200.80 is: 44,311,881.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,689,511.20 : 120,960,783.60 = 29,559,200.80 : x
  2. Step 2: Convert to fraction form
    80,689,511.20/120,960,783.60 = 29,559,200.80/x
  3. Step 3: Cross multiply
    80,689,511.20x = 120,960,783.60 × 29,559,200.80
  4. Step 4: Simplify right side
    80,689,511.20x = 3,575,504,091,357,747
  5. Step 5: Solve for x
    x = 3,575,504,091,357,747/80,689,511.20
  6. Step 6: Final answer
    x = 44,311,881.91

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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.