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Finding the Fourth Proportional to 79,690.94, 109,973.49 and 43,880.86

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Solution

The fourth proportional to 79,690.94, 109,973.49 and 43,880.86 is: 60,555.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,690.94 : 109,973.49 = 43,880.86 : x
  2. Step 2: Convert to fraction form
    79,690.94/109,973.49 = 43,880.86/x
  3. Step 3: Cross multiply
    79,690.94x = 109,973.49 × 43,880.86
  4. Step 4: Simplify right side
    79,690.94x = 4,825,731,318.40
  5. Step 5: Solve for x
    x = 4,825,731,318.40/79,690.94
  6. Step 6: Final answer
    x = 60,555.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.