Home / 71,971,310.40-107,956,965.60-20,854,996.80

Finding the Fourth Proportional to 71,971,310.40, 107,956,965.60 and 20,854,996.80

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Solution

The fourth proportional to 71,971,310.40, 107,956,965.60 and 20,854,996.80 is: 31,282,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,971,310.40 : 107,956,965.60 = 20,854,996.80 : x
  2. Step 2: Convert to fraction form
    71,971,310.40/107,956,965.60 = 20,854,996.80/x
  3. Step 3: Cross multiply
    71,971,310.40x = 107,956,965.60 × 20,854,996.80
  4. Step 4: Simplify right side
    71,971,310.40x = 2,251,442,172,125,710
  5. Step 5: Solve for x
    x = 2,251,442,172,125,710/71,971,310.40
  6. Step 6: Final answer
    x = 31,282,495.20

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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.