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Finding the Fourth Proportional to 78,789.67, 118,186.13 and 43,951.03

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Solution

The fourth proportional to 78,789.67, 118,186.13 and 43,951.03 is: 65,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,789.67 : 118,186.13 = 43,951.03 : x
  2. Step 2: Convert to fraction form
    78,789.67/118,186.13 = 43,951.03/x
  3. Step 3: Cross multiply
    78,789.67x = 118,186.13 × 43,951.03
  4. Step 4: Simplify right side
    78,789.67x = 5,194,402,145.21
  5. Step 5: Solve for x
    x = 5,194,402,145.21/78,789.67
  6. Step 6: Final answer
    x = 65,927.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.