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Finding the Fourth Proportional to 39,807.16, 59,701.17 and 11,719.57

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Solution

The fourth proportional to 39,807.16, 59,701.17 and 11,719.57 is: 17,576.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.16 : 59,701.17 = 11,719.57 : x
  2. Step 2: Convert to fraction form
    39,807.16/59,701.17 = 11,719.57/x
  3. Step 3: Cross multiply
    39,807.16x = 59,701.17 × 11,719.57
  4. Step 4: Simplify right side
    39,807.16x = 699,672,040.90
  5. Step 5: Solve for x
    x = 699,672,040.90/39,807.16
  6. Step 6: Final answer
    x = 17,576.54

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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.