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Finding the Fourth Proportional to 85,831.38, 118,445.49 and 48,104.82

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Solution

The fourth proportional to 85,831.38, 118,445.49 and 48,104.82 is: 66,383.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,831.38 : 118,445.49 = 48,104.82 : x
  2. Step 2: Convert to fraction form
    85,831.38/118,445.49 = 48,104.82/x
  3. Step 3: Cross multiply
    85,831.38x = 118,445.49 × 48,104.82
  4. Step 4: Simplify right side
    85,831.38x = 5,697,798,976.26
  5. Step 5: Solve for x
    x = 5,697,798,976.26/85,831.38
  6. Step 6: Final answer
    x = 66,383.63

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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.