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Finding the Fourth Proportional to 86,079.80, 118,790.02 and 47,838.14

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Solution

The fourth proportional to 86,079.80, 118,790.02 and 47,838.14 is: 66,016.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,079.80 : 118,790.02 = 47,838.14 : x
  2. Step 2: Convert to fraction form
    86,079.80/118,790.02 = 47,838.14/x
  3. Step 3: Cross multiply
    86,079.80x = 118,790.02 × 47,838.14
  4. Step 4: Simplify right side
    86,079.80x = 5,682,693,518.67
  5. Step 5: Solve for x
    x = 5,682,693,518.67/86,079.80
  6. Step 6: Final answer
    x = 66,016.57

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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.