Home / 20,778,066.90-31,167,100.35-6,405,540.30

Finding the Fourth Proportional to 20,778,066.90, 31,167,100.35 and 6,405,540.30

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Solution

The fourth proportional to 20,778,066.90, 31,167,100.35 and 6,405,540.30 is: 9,608,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778,066.90 : 31,167,100.35 = 6,405,540.30 : x
  2. Step 2: Convert to fraction form
    20,778,066.90/31,167,100.35 = 6,405,540.30/x
  3. Step 3: Cross multiply
    20,778,066.90x = 31,167,100.35 × 6,405,540.30
  4. Step 4: Simplify right side
    20,778,066.90x = 199,642,117,326,069.09
  5. Step 5: Solve for x
    x = 199,642,117,326,069.09/20,778,066.90
  6. Step 6: Final answer
    x = 9,608,310.45

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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.