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Finding the Fourth Proportional to 65,452.54, 98,178.87 and 18,705.43

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Solution

The fourth proportional to 65,452.54, 98,178.87 and 18,705.43 is: 28,058.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,452.54 : 98,178.87 = 18,705.43 : x
  2. Step 2: Convert to fraction form
    65,452.54/98,178.87 = 18,705.43/x
  3. Step 3: Cross multiply
    65,452.54x = 98,178.87 × 18,705.43
  4. Step 4: Simplify right side
    65,452.54x = 1,836,477,980.26
  5. Step 5: Solve for x
    x = 1,836,477,980.26/65,452.54
  6. Step 6: Final answer
    x = 28,058.16

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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.