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Finding the Fourth Proportional to 79,374.80, 119,066.76 and 28,784.84

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Solution

The fourth proportional to 79,374.80, 119,066.76 and 28,784.84 is: 43,178.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,374.80 : 119,066.76 = 28,784.84 : x
  2. Step 2: Convert to fraction form
    79,374.80/119,066.76 = 28,784.84/x
  3. Step 3: Cross multiply
    79,374.80x = 119,066.76 × 28,784.84
  4. Step 4: Simplify right side
    79,374.80x = 3,427,317,635.92
  5. Step 5: Solve for x
    x = 3,427,317,635.92/79,374.80
  6. Step 6: Final answer
    x = 43,178.91

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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.