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Finding the Fourth Proportional to 79,643.71, 109,909.09 and 43,834.54

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Solution

The fourth proportional to 79,643.71, 109,909.09 and 43,834.54 is: 60,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,643.71 : 109,909.09 = 43,834.54 : x
  2. Step 2: Convert to fraction form
    79,643.71/109,909.09 = 43,834.54/x
  3. Step 3: Cross multiply
    79,643.71x = 109,909.09 × 43,834.54
  4. Step 4: Simplify right side
    79,643.71x = 4,817,814,697.19
  5. Step 5: Solve for x
    x = 4,817,814,697.19/79,643.71
  6. Step 6: Final answer
    x = 60,492.10

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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.