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Finding the Fourth Proportional to 71,861,474.40, 107,792,678.40 and 28,734,300.96

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Solution

The fourth proportional to 71,861,474.40, 107,792,678.40 and 28,734,300.96 is: 43,101,638.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,861,474.40 : 107,792,678.40 = 28,734,300.96 : x
  2. Step 2: Convert to fraction form
    71,861,474.40/107,792,678.40 = 28,734,300.96/x
  3. Step 3: Cross multiply
    71,861,474.40x = 107,792,678.40 × 28,734,300.96
  4. Step 4: Simplify right side
    71,861,474.40x = 3,097,347,262,430,091.50
  5. Step 5: Solve for x
    x = 3,097,347,262,430,091.50/71,861,474.40
  6. Step 6: Final answer
    x = 43,101,638.09

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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.