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Finding the Fourth Proportional to 71,608,096.80, 107,285,655.60 and 69,240,045.60

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Solution

The fourth proportional to 71,608,096.80, 107,285,655.60 and 69,240,045.60 is: 103,737,761.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,608,096.80 : 107,285,655.60 = 69,240,045.60 : x
  2. Step 2: Convert to fraction form
    71,608,096.80/107,285,655.60 = 69,240,045.60/x
  3. Step 3: Cross multiply
    71,608,096.80x = 107,285,655.60 × 69,240,045.60
  4. Step 4: Simplify right side
    71,608,096.80x = 7,428,463,685,969,894
  5. Step 5: Solve for x
    x = 7,428,463,685,969,894/71,608,096.80
  6. Step 6: Final answer
    x = 103,737,761.76

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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.