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Finding the Fourth Proportional to 79,132.80, 118,680 and 26,528.64

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Solution

The fourth proportional to 79,132.80, 118,680 and 26,528.64 is: 39,786.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,132.80 : 118,680 = 26,528.64 : x
  2. Step 2: Convert to fraction form
    79,132.80/118,680 = 26,528.64/x
  3. Step 3: Cross multiply
    79,132.80x = 118,680 × 26,528.64
  4. Step 4: Simplify right side
    79,132.80x = 3,148,418,995.20
  5. Step 5: Solve for x
    x = 3,148,418,995.20/79,132.80
  6. Step 6: Final answer
    x = 39,786.52

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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.