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Finding the Fourth Proportional to 77,324.10, 115,986.15 and 40,383.30

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Solution

The fourth proportional to 77,324.10, 115,986.15 and 40,383.30 is: 60,574.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,324.10 : 115,986.15 = 40,383.30 : x
  2. Step 2: Convert to fraction form
    77,324.10/115,986.15 = 40,383.30/x
  3. Step 3: Cross multiply
    77,324.10x = 115,986.15 × 40,383.30
  4. Step 4: Simplify right side
    77,324.10x = 4,683,903,491.30
  5. Step 5: Solve for x
    x = 4,683,903,491.30/77,324.10
  6. Step 6: Final answer
    x = 60,574.95

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Similar ratio
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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.