Home / 81,058.40-121,599.66-28,458.56

Finding the Fourth Proportional to 81,058.40, 121,599.66 and 28,458.56

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Solution

The fourth proportional to 81,058.40, 121,599.66 and 28,458.56 is: 42,692.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,058.40 : 121,599.66 = 28,458.56 : x
  2. Step 2: Convert to fraction form
    81,058.40/121,599.66 = 28,458.56/x
  3. Step 3: Cross multiply
    81,058.40x = 121,599.66 × 28,458.56
  4. Step 4: Simplify right side
    81,058.40x = 3,460,551,220.09
  5. Step 5: Solve for x
    x = 3,460,551,220.09/81,058.40
  6. Step 6: Final answer
    x = 42,692.07

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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.