Home / 84,215.15-126,338.51-28,058.66

Finding the Fourth Proportional to 84,215.15, 126,338.51 and 28,058.66

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Solution

The fourth proportional to 84,215.15, 126,338.51 and 28,058.66 is: 42,093.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,215.15 : 126,338.51 = 28,058.66 : x
  2. Step 2: Convert to fraction form
    84,215.15/126,338.51 = 28,058.66/x
  3. Step 3: Cross multiply
    84,215.15x = 126,338.51 × 28,058.66
  4. Step 4: Simplify right side
    84,215.15x = 3,544,888,735.45
  5. Step 5: Solve for x
    x = 3,544,888,735.45/84,215.15
  6. Step 6: Final answer
    x = 42,093.25

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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.