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Finding the Fourth Proportional to 86,114.53, 118,849.04 and 48,388.78

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Solution

The fourth proportional to 86,114.53, 118,849.04 and 48,388.78 is: 66,782.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,114.53 : 118,849.04 = 48,388.78 : x
  2. Step 2: Convert to fraction form
    86,114.53/118,849.04 = 48,388.78/x
  3. Step 3: Cross multiply
    86,114.53x = 118,849.04 × 48,388.78
  4. Step 4: Simplify right side
    86,114.53x = 5,750,960,049.77
  5. Step 5: Solve for x
    x = 5,750,960,049.77/86,114.53
  6. Step 6: Final answer
    x = 66,782.69

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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.