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Finding the Fourth Proportional to 58,058.60, 87,087.89 and 18,618.80

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Solution

The fourth proportional to 58,058.60, 87,087.89 and 18,618.80 is: 27,928.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,058.60 : 87,087.89 = 18,618.80 : x
  2. Step 2: Convert to fraction form
    58,058.60/87,087.89 = 18,618.80/x
  3. Step 3: Cross multiply
    58,058.60x = 87,087.89 × 18,618.80
  4. Step 4: Simplify right side
    58,058.60x = 1,621,471,617.44
  5. Step 5: Solve for x
    x = 1,621,471,617.44/58,058.60
  6. Step 6: Final answer
    x = 27,928.19

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Similar ratio
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1.5x scale

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.