Home / 30,873,299.45-42,612,895.53-20,966,943.96

Finding the Fourth Proportional to 30,873,299.45, 42,612,895.53 and 20,966,943.96

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Solution

The fourth proportional to 30,873,299.45, 42,612,895.53 and 20,966,943.96 is: 28,939,640.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,873,299.45 : 42,612,895.53 = 20,966,943.96 : x
  2. Step 2: Convert to fraction form
    30,873,299.45/42,612,895.53 = 20,966,943.96/x
  3. Step 3: Cross multiply
    30,873,299.45x = 42,612,895.53 × 20,966,943.96
  4. Step 4: Simplify right side
    30,873,299.45x = 893,462,192,550,844.50
  5. Step 5: Solve for x
    x = 893,462,192,550,844.50/30,873,299.45
  6. Step 6: Final answer
    x = 28,939,640.68

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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.