Home / 40,520,975.12-55,918,962.94-21,936,114.74

Finding the Fourth Proportional to 40,520,975.12, 55,918,962.94 and 21,936,114.74

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Solution

The fourth proportional to 40,520,975.12, 55,918,962.94 and 21,936,114.74 is: 30,271,847.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,520,975.12 : 55,918,962.94 = 21,936,114.74 : x
  2. Step 2: Convert to fraction form
    40,520,975.12/55,918,962.94 = 21,936,114.74/x
  3. Step 3: Cross multiply
    40,520,975.12x = 55,918,962.94 × 21,936,114.74
  4. Step 4: Simplify right side
    40,520,975.12x = 1,226,644,787,193,647.50
  5. Step 5: Solve for x
    x = 1,226,644,787,193,647.50/40,520,975.12
  6. Step 6: Final answer
    x = 30,271,847.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.