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Finding the Fourth Proportional to 86,043.40, 118,740.18 and 49,741.96

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Solution

The fourth proportional to 86,043.40, 118,740.18 and 49,741.96 is: 68,644.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,043.40 : 118,740.18 = 49,741.96 : x
  2. Step 2: Convert to fraction form
    86,043.40/118,740.18 = 49,741.96/x
  3. Step 3: Cross multiply
    86,043.40x = 118,740.18 × 49,741.96
  4. Step 4: Simplify right side
    86,043.40x = 5,906,369,283.95
  5. Step 5: Solve for x
    x = 5,906,369,283.95/86,043.40
  6. Step 6: Final answer
    x = 68,644.07

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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.