Home / 30,660,198-42,311,115.22-16,721,586.78

Finding the Fourth Proportional to 30,660,198, 42,311,115.22 and 16,721,586.78

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Solution

The fourth proportional to 30,660,198, 42,311,115.22 and 16,721,586.78 is: 23,075,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,660,198 : 42,311,115.22 = 16,721,586.78 : x
  2. Step 2: Convert to fraction form
    30,660,198/42,311,115.22 = 16,721,586.78/x
  3. Step 3: Cross multiply
    30,660,198x = 42,311,115.22 × 16,721,586.78
  4. Step 4: Simplify right side
    30,660,198x = 707,508,984,909,808.75
  5. Step 5: Solve for x
    x = 707,508,984,909,808.75/30,660,198
  6. Step 6: Final answer
    x = 23,075,812.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.