Home / 30,951,907.92-42,639,809.00-21,642,057.70

Finding the Fourth Proportional to 30,951,907.92, 42,639,809.00 and 21,642,057.70

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Solution

The fourth proportional to 30,951,907.92, 42,639,809.00 and 21,642,057.70 is: 29,814,420.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,951,907.92 : 42,639,809.00 = 21,642,057.70 : x
  2. Step 2: Convert to fraction form
    30,951,907.92/42,639,809.00 = 21,642,057.70/x
  3. Step 3: Cross multiply
    30,951,907.92x = 42,639,809.00 × 21,642,057.70
  4. Step 4: Simplify right side
    30,951,907.92x = 922,813,206,480,169.50
  5. Step 5: Solve for x
    x = 922,813,206,480,169.50/30,951,907.92
  6. Step 6: Final answer
    x = 29,814,420.77

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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.