Home / 65,539.81-98,298.78-18,781.75

Finding the Fourth Proportional to 65,539.81, 98,298.78 and 18,781.75

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Solution

The fourth proportional to 65,539.81, 98,298.78 and 18,781.75 is: 28,169.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,539.81 : 98,298.78 = 18,781.75 : x
  2. Step 2: Convert to fraction form
    65,539.81/98,298.78 = 18,781.75/x
  3. Step 3: Cross multiply
    65,539.81x = 98,298.78 × 18,781.75
  4. Step 4: Simplify right side
    65,539.81x = 1,846,223,111.27
  5. Step 5: Solve for x
    x = 1,846,223,111.27/65,539.81
  6. Step 6: Final answer
    x = 28,169.49

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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.