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Finding the Fourth Proportional to 79,677.76, 119,515.56 and 27,123.88

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Solution

The fourth proportional to 79,677.76, 119,515.56 and 27,123.88 is: 40,685.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,677.76 : 119,515.56 = 27,123.88 : x
  2. Step 2: Convert to fraction form
    79,677.76/119,515.56 = 27,123.88/x
  3. Step 3: Cross multiply
    79,677.76x = 119,515.56 × 27,123.88
  4. Step 4: Simplify right side
    79,677.76x = 3,241,725,707.57
  5. Step 5: Solve for x
    x = 3,241,725,707.57/79,677.76
  6. Step 6: Final answer
    x = 40,685.45

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1.5x scale

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.