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Finding the Fourth Proportional to 79,098.79, 109,154.87 and 43,288.08

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Solution

The fourth proportional to 79,098.79, 109,154.87 and 43,288.08 is: 59,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,098.79 : 109,154.87 = 43,288.08 : x
  2. Step 2: Convert to fraction form
    79,098.79/109,154.87 = 43,288.08/x
  3. Step 3: Cross multiply
    79,098.79x = 109,154.87 × 43,288.08
  4. Step 4: Simplify right side
    79,098.79x = 4,725,104,744.95
  5. Step 5: Solve for x
    x = 4,725,104,744.95/79,098.79
  6. Step 6: Final answer
    x = 59,736.75

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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.