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Finding the Fourth Proportional to 71,104,893.20, 106,593,479.40 and 28,003,497.20

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Solution

The fourth proportional to 71,104,893.20, 106,593,479.40 and 28,003,497.20 is: 41,980,095.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,104,893.20 : 106,593,479.40 = 28,003,497.20 : x
  2. Step 2: Convert to fraction form
    71,104,893.20/106,593,479.40 = 28,003,497.20/x
  3. Step 3: Cross multiply
    71,104,893.20x = 106,593,479.40 × 28,003,497.20
  4. Step 4: Simplify right side
    71,104,893.20x = 2,984,990,201,916,158
  5. Step 5: Solve for x
    x = 2,984,990,201,916,158/71,104,893.20
  6. Step 6: Final answer
    x = 41,980,095.43

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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.