Home / 70,324,356.24-105,482,448.72-21,139,147.44

Finding the Fourth Proportional to 70,324,356.24, 105,482,448.72 and 21,139,147.44

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Solution

The fourth proportional to 70,324,356.24, 105,482,448.72 and 21,139,147.44 is: 31,707,493.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,324,356.24 : 105,482,448.72 = 21,139,147.44 : x
  2. Step 2: Convert to fraction form
    70,324,356.24/105,482,448.72 = 21,139,147.44/x
  3. Step 3: Cross multiply
    70,324,356.24x = 105,482,448.72 × 21,139,147.44
  4. Step 4: Simplify right side
    70,324,356.24x = 2,229,809,035,824,319.50
  5. Step 5: Solve for x
    x = 2,229,809,035,824,319.50/70,324,356.24
  6. Step 6: Final answer
    x = 31,707,493.04

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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.