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Finding the Fourth Proportional to 65,745.92, 98,623.92 and 18,999.20

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Solution

The fourth proportional to 65,745.92, 98,623.92 and 18,999.20 is: 28,500.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,745.92 : 98,623.92 = 18,999.20 : x
  2. Step 2: Convert to fraction form
    65,745.92/98,623.92 = 18,999.20/x
  3. Step 3: Cross multiply
    65,745.92x = 98,623.92 × 18,999.20
  4. Step 4: Simplify right side
    65,745.92x = 1,873,775,580.86
  5. Step 5: Solve for x
    x = 1,873,775,580.86/65,745.92
  6. Step 6: Final answer
    x = 28,500.26

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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.