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Finding the Fourth Proportional to 85,832, 118,438.56 and 48,100.80

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Solution

The fourth proportional to 85,832, 118,438.56 and 48,100.80 is: 66,373.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,832 : 118,438.56 = 48,100.80 : x
  2. Step 2: Convert to fraction form
    85,832/118,438.56 = 48,100.80/x
  3. Step 3: Cross multiply
    85,832x = 118,438.56 × 48,100.80
  4. Step 4: Simplify right side
    85,832x = 5,696,989,486.85
  5. Step 5: Solve for x
    x = 5,696,989,486.85/85,832
  6. Step 6: Final answer
    x = 66,373.72

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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.