Home / 81,870.29-122,805.43-22,705.96

Finding the Fourth Proportional to 81,870.29, 122,805.43 and 22,705.96

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Solution

The fourth proportional to 81,870.29, 122,805.43 and 22,705.96 is: 34,058.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,870.29 : 122,805.43 = 22,705.96 : x
  2. Step 2: Convert to fraction form
    81,870.29/122,805.43 = 22,705.96/x
  3. Step 3: Cross multiply
    81,870.29x = 122,805.43 × 22,705.96
  4. Step 4: Simplify right side
    81,870.29x = 2,788,415,181.36
  5. Step 5: Solve for x
    x = 2,788,415,181.36/81,870.29
  6. Step 6: Final answer
    x = 34,058.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.