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Finding the Fourth Proportional to 65,887.48, 90,923.82 and 36,079.48

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Solution

The fourth proportional to 65,887.48, 90,923.82 and 36,079.48 is: 49,789.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,887.48 : 90,923.82 = 36,079.48 : x
  2. Step 2: Convert to fraction form
    65,887.48/90,923.82 = 36,079.48/x
  3. Step 3: Cross multiply
    65,887.48x = 90,923.82 × 36,079.48
  4. Step 4: Simplify right side
    65,887.48x = 3,280,484,145.21
  5. Step 5: Solve for x
    x = 3,280,484,145.21/65,887.48
  6. Step 6: Final answer
    x = 49,789.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.