Home / 77,451.20-115,942.80-70,058.96

Finding the Fourth Proportional to 77,451.20, 115,942.80 and 70,058.96

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Solution

The fourth proportional to 77,451.20, 115,942.80 and 70,058.96 is: 104,876.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,451.20 : 115,942.80 = 70,058.96 : x
  2. Step 2: Convert to fraction form
    77,451.20/115,942.80 = 70,058.96/x
  3. Step 3: Cross multiply
    77,451.20x = 115,942.80 × 70,058.96
  4. Step 4: Simplify right side
    77,451.20x = 8,122,831,987.49
  5. Step 5: Solve for x
    x = 8,122,831,987.49/77,451.20
  6. Step 6: Final answer
    x = 104,876.77

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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.