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Finding the Fourth Proportional to 79,934.88, 119,888.64 and 26,620.80

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Solution

The fourth proportional to 79,934.88, 119,888.64 and 26,620.80 is: 39,926.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,934.88 : 119,888.64 = 26,620.80 : x
  2. Step 2: Convert to fraction form
    79,934.88/119,888.64 = 26,620.80/x
  3. Step 3: Cross multiply
    79,934.88x = 119,888.64 × 26,620.80
  4. Step 4: Simplify right side
    79,934.88x = 3,191,531,507.71
  5. Step 5: Solve for x
    x = 3,191,531,507.71/79,934.88
  6. Step 6: Final answer
    x = 39,926.64

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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.