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Finding the Fourth Proportional to 71,115,794.40, 106,673,691.60 and 53,199,890.40

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Solution

The fourth proportional to 71,115,794.40, 106,673,691.60 and 53,199,890.40 is: 79,799,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,115,794.40 : 106,673,691.60 = 53,199,890.40 : x
  2. Step 2: Convert to fraction form
    71,115,794.40/106,673,691.60 = 53,199,890.40/x
  3. Step 3: Cross multiply
    71,115,794.40x = 106,673,691.60 × 53,199,890.40
  4. Step 4: Simplify right side
    71,115,794.40x = 5,675,028,701,683,400
  5. Step 5: Solve for x
    x = 5,675,028,701,683,400/71,115,794.40
  6. Step 6: Final answer
    x = 79,799,835.60

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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.