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Finding the Fourth Proportional to 79,409.80, 119,089.41 and 26,089.40

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Solution

The fourth proportional to 79,409.80, 119,089.41 and 26,089.40 is: 39,125.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,409.80 : 119,089.41 = 26,089.40 : x
  2. Step 2: Convert to fraction form
    79,409.80/119,089.41 = 26,089.40/x
  3. Step 3: Cross multiply
    79,409.80x = 119,089.41 × 26,089.40
  4. Step 4: Simplify right side
    79,409.80x = 3,106,971,253.25
  5. Step 5: Solve for x
    x = 3,106,971,253.25/79,409.80
  6. Step 6: Final answer
    x = 39,125.79

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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.