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Finding the Fourth Proportional to 86,079.84, 118,790.64 and 48,354.48

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Solution

The fourth proportional to 86,079.84, 118,790.64 and 48,354.48 is: 66,729.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,079.84 : 118,790.64 = 48,354.48 : x
  2. Step 2: Convert to fraction form
    86,079.84/118,790.64 = 48,354.48/x
  3. Step 3: Cross multiply
    86,079.84x = 118,790.64 × 48,354.48
  4. Step 4: Simplify right side
    86,079.84x = 5,744,059,626.07
  5. Step 5: Solve for x
    x = 5,744,059,626.07/86,079.84
  6. Step 6: Final answer
    x = 66,729.44

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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.