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Finding the Fourth Proportional to 79,791.76, 119,199.38 and 57,414.16

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Solution

The fourth proportional to 79,791.76, 119,199.38 and 57,414.16 is: 85,769.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,791.76 : 119,199.38 = 57,414.16 : x
  2. Step 2: Convert to fraction form
    79,791.76/119,199.38 = 57,414.16/x
  3. Step 3: Cross multiply
    79,791.76x = 119,199.38 × 57,414.16
  4. Step 4: Simplify right side
    79,791.76x = 6,843,732,275.22
  5. Step 5: Solve for x
    x = 6,843,732,275.22/79,791.76
  6. Step 6: Final answer
    x = 85,769.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.