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Finding the Fourth Proportional to 79,978.47, 119,955.40 and 26,671.38

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Solution

The fourth proportional to 79,978.47, 119,955.40 and 26,671.38 is: 40,002.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,978.47 : 119,955.40 = 26,671.38 : x
  2. Step 2: Convert to fraction form
    79,978.47/119,955.40 = 26,671.38/x
  3. Step 3: Cross multiply
    79,978.47x = 119,955.40 × 26,671.38
  4. Step 4: Simplify right side
    79,978.47x = 3,199,375,539.94
  5. Step 5: Solve for x
    x = 3,199,375,539.94/79,978.47
  6. Step 6: Final answer
    x = 40,002.96

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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.