Home / 75,513,891.20-113,270,513.52-20,926,320.80

Finding the Fourth Proportional to 75,513,891.20, 113,270,513.52 and 20,926,320.80

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Solution

The fourth proportional to 75,513,891.20, 113,270,513.52 and 20,926,320.80 is: 31,389,391.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,513,891.20 : 113,270,513.52 = 20,926,320.80 : x
  2. Step 2: Convert to fraction form
    75,513,891.20/113,270,513.52 = 20,926,320.80/x
  3. Step 3: Cross multiply
    75,513,891.20x = 113,270,513.52 × 20,926,320.80
  4. Step 4: Simplify right side
    75,513,891.20x = 2,370,335,103,100,257
  5. Step 5: Solve for x
    x = 2,370,335,103,100,257/75,513,891.20
  6. Step 6: Final answer
    x = 31,389,391.61

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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.