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Finding the Fourth Proportional to 71,810,800.80, 107,645,342.40 and 35,389,377.60

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Solution

The fourth proportional to 71,810,800.80, 107,645,342.40 and 35,389,377.60 is: 53,049,146.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,810,800.80 : 107,645,342.40 = 35,389,377.60 : x
  2. Step 2: Convert to fraction form
    71,810,800.80/107,645,342.40 = 35,389,377.60/x
  3. Step 3: Cross multiply
    71,810,800.80x = 107,645,342.40 × 35,389,377.60
  4. Step 4: Simplify right side
    71,810,800.80x = 3,809,501,669,074,890.50
  5. Step 5: Solve for x
    x = 3,809,501,669,074,890.50/71,810,800.80
  6. Step 6: Final answer
    x = 53,049,146.18

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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.