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Finding the Fourth Proportional to 85,992.13, 118,669.14 and 48,278.53

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Solution

The fourth proportional to 85,992.13, 118,669.14 and 48,278.53 is: 66,624.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,992.13 : 118,669.14 = 48,278.53 : x
  2. Step 2: Convert to fraction form
    85,992.13/118,669.14 = 48,278.53/x
  3. Step 3: Cross multiply
    85,992.13x = 118,669.14 × 48,278.53
  4. Step 4: Simplify right side
    85,992.13x = 5,729,170,800.83
  5. Step 5: Solve for x
    x = 5,729,170,800.83/85,992.13
  6. Step 6: Final answer
    x = 66,624.37

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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.