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Finding the Fourth Proportional to 79,978.44, 119,866.86 and 40,545.48

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Solution

The fourth proportional to 79,978.44, 119,866.86 and 40,545.48 is: 60,767.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,978.44 : 119,866.86 = 40,545.48 : x
  2. Step 2: Convert to fraction form
    79,978.44/119,866.86 = 40,545.48/x
  3. Step 3: Cross multiply
    79,978.44x = 119,866.86 × 40,545.48
  4. Step 4: Simplify right side
    79,978.44x = 4,860,059,374.79
  5. Step 5: Solve for x
    x = 4,860,059,374.79/79,978.44
  6. Step 6: Final answer
    x = 60,767.12

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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.