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Finding the Fourth Proportional to 79,263.90, 109,382.94 and 43,454.21

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Solution

The fourth proportional to 79,263.90, 109,382.94 and 43,454.21 is: 59,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,263.90 : 109,382.94 = 43,454.21 : x
  2. Step 2: Convert to fraction form
    79,263.90/109,382.94 = 43,454.21/x
  3. Step 3: Cross multiply
    79,263.90x = 109,382.94 × 43,454.21
  4. Step 4: Simplify right side
    79,263.90x = 4,753,148,698.26
  5. Step 5: Solve for x
    x = 4,753,148,698.26/79,263.90
  6. Step 6: Final answer
    x = 59,966.12

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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.