Home / 30,873,234.40-42,612,805.80-20,966,878.84

Finding the Fourth Proportional to 30,873,234.40, 42,612,805.80 and 20,966,878.84

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Solution

The fourth proportional to 30,873,234.40, 42,612,805.80 and 20,966,878.84 is: 28,939,550.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,873,234.40 : 42,612,805.80 = 20,966,878.84 : x
  2. Step 2: Convert to fraction form
    30,873,234.40/42,612,805.80 = 20,966,878.84/x
  3. Step 3: Cross multiply
    30,873,234.40x = 42,612,805.80 × 20,966,878.84
  4. Step 4: Simplify right side
    30,873,234.40x = 893,457,536,241,049.25
  5. Step 5: Solve for x
    x = 893,457,536,241,049.25/30,873,234.40
  6. Step 6: Final answer
    x = 28,939,550.83

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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.