Home / 65,781.45-98,688.38-19,039.05

Finding the Fourth Proportional to 65,781.45, 98,688.38 and 19,039.05

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Solution

The fourth proportional to 65,781.45, 98,688.38 and 19,039.05 is: 28,563.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,781.45 : 98,688.38 = 19,039.05 : x
  2. Step 2: Convert to fraction form
    65,781.45/98,688.38 = 19,039.05/x
  3. Step 3: Cross multiply
    65,781.45x = 98,688.38 × 19,039.05
  4. Step 4: Simplify right side
    65,781.45x = 1,878,932,906.04
  5. Step 5: Solve for x
    x = 1,878,932,906.04/65,781.45
  6. Step 6: Final answer
    x = 28,563.26

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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.