Home / 42,770,180.80-64,155,271.20-12,481,105.60

Finding the Fourth Proportional to 42,770,180.80, 64,155,271.20 and 12,481,105.60

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Solution

The fourth proportional to 42,770,180.80, 64,155,271.20 and 12,481,105.60 is: 18,721,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,770,180.80 : 64,155,271.20 = 12,481,105.60 : x
  2. Step 2: Convert to fraction form
    42,770,180.80/64,155,271.20 = 12,481,105.60/x
  3. Step 3: Cross multiply
    42,770,180.80x = 64,155,271.20 × 12,481,105.60
  4. Step 4: Simplify right side
    42,770,180.80x = 800,728,714,643,838.75
  5. Step 5: Solve for x
    x = 800,728,714,643,838.75/42,770,180.80
  6. Step 6: Final answer
    x = 18,721,658.40

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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.