Home / 77,058.85-115,577.82-20,902.57

Finding the Fourth Proportional to 77,058.85, 115,577.82 and 20,902.57

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Solution

The fourth proportional to 77,058.85, 115,577.82 and 20,902.57 is: 31,351.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,058.85 : 115,577.82 = 20,902.57 : x
  2. Step 2: Convert to fraction form
    77,058.85/115,577.82 = 20,902.57/x
  3. Step 3: Cross multiply
    77,058.85x = 115,577.82 × 20,902.57
  4. Step 4: Simplify right side
    77,058.85x = 2,415,873,473.00
  5. Step 5: Solve for x
    x = 2,415,873,473.00/77,058.85
  6. Step 6: Final answer
    x = 31,351.02

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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.