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Finding the Fourth Proportional to 79,881.96, 119,735.46 and 40,384.74

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Solution

The fourth proportional to 79,881.96, 119,735.46 and 40,384.74 is: 60,532.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,881.96 : 119,735.46 = 40,384.74 : x
  2. Step 2: Convert to fraction form
    79,881.96/119,735.46 = 40,384.74/x
  3. Step 3: Cross multiply
    79,881.96x = 119,735.46 × 40,384.74
  4. Step 4: Simplify right side
    79,881.96x = 4,835,485,420.88
  5. Step 5: Solve for x
    x = 4,835,485,420.88/79,881.96
  6. Step 6: Final answer
    x = 60,532.88

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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.