Home / 30,578,711-42,198,075.38-16,639,590.74

Finding the Fourth Proportional to 30,578,711, 42,198,075.38 and 16,639,590.74

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Solution

The fourth proportional to 30,578,711, 42,198,075.38 and 16,639,590.74 is: 22,962,338.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,578,711 : 42,198,075.38 = 16,639,590.74 : x
  2. Step 2: Convert to fraction form
    30,578,711/42,198,075.38 = 16,639,590.74/x
  3. Step 3: Cross multiply
    30,578,711x = 42,198,075.38 × 16,639,590.74
  4. Step 4: Simplify right side
    30,578,711x = 702,158,704,338,870
  5. Step 5: Solve for x
    x = 702,158,704,338,870/30,578,711
  6. Step 6: Final answer
    x = 22,962,338.22

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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.