Home / 79,840,043.20-119,760,064.80-28,723,729.60

Finding the Fourth Proportional to 79,840,043.20, 119,760,064.80 and 28,723,729.60

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Solution

The fourth proportional to 79,840,043.20, 119,760,064.80 and 28,723,729.60 is: 43,085,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,840,043.20 : 119,760,064.80 = 28,723,729.60 : x
  2. Step 2: Convert to fraction form
    79,840,043.20/119,760,064.80 = 28,723,729.60/x
  3. Step 3: Cross multiply
    79,840,043.20x = 119,760,064.80 × 28,723,729.60
  4. Step 4: Simplify right side
    79,840,043.20x = 3,439,955,718,193,678
  5. Step 5: Solve for x
    x = 3,439,955,718,193,678/79,840,043.20
  6. Step 6: Final answer
    x = 43,085,594.40

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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.