Home / 70,118,912.71-105,183,656.14-20,930,880.66

Finding the Fourth Proportional to 70,118,912.71, 105,183,656.14 and 20,930,880.66

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Solution

The fourth proportional to 70,118,912.71, 105,183,656.14 and 20,930,880.66 is: 31,397,899.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,118,912.71 : 105,183,656.14 = 20,930,880.66 : x
  2. Step 2: Convert to fraction form
    70,118,912.71/105,183,656.14 = 20,930,880.66/x
  3. Step 3: Cross multiply
    70,118,912.71x = 105,183,656.14 × 20,930,880.66
  4. Step 4: Simplify right side
    70,118,912.71x = 2,201,586,554,048,816.25
  5. Step 5: Solve for x
    x = 2,201,586,554,048,816.25/70,118,912.71
  6. Step 6: Final answer
    x = 31,397,899.21

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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.