Home / 71,561,950.40-107,343,858.72-20,445,636.80

Finding the Fourth Proportional to 71,561,950.40, 107,343,858.72 and 20,445,636.80

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Solution

The fourth proportional to 71,561,950.40, 107,343,858.72 and 20,445,636.80 is: 30,668,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,561,950.40 : 107,343,858.72 = 20,445,636.80 : x
  2. Step 2: Convert to fraction form
    71,561,950.40/107,343,858.72 = 20,445,636.80/x
  3. Step 3: Cross multiply
    71,561,950.40x = 107,343,858.72 × 20,445,636.80
  4. Step 4: Simplify right side
    71,561,950.40x = 2,194,713,548,099,633
  5. Step 5: Solve for x
    x = 2,194,713,548,099,633/71,561,950.40
  6. Step 6: Final answer
    x = 30,668,721.80

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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.