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Finding the Fourth Proportional to 78,708.06, 118,061.69 and 19,543.73

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Solution

The fourth proportional to 78,708.06, 118,061.69 and 19,543.73 is: 29,315.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,708.06 : 118,061.69 = 19,543.73 : x
  2. Step 2: Convert to fraction form
    78,708.06/118,061.69 = 19,543.73/x
  3. Step 3: Cross multiply
    78,708.06x = 118,061.69 × 19,543.73
  4. Step 4: Simplify right side
    78,708.06x = 2,307,365,104.68
  5. Step 5: Solve for x
    x = 2,307,365,104.68/78,708.06
  6. Step 6: Final answer
    x = 29,315.49

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