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Finding the Fourth Proportional to 65,576.68, 90,491.16 and 38,717.80

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Solution

The fourth proportional to 65,576.68, 90,491.16 and 38,717.80 is: 53,427.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,576.68 : 90,491.16 = 38,717.80 : x
  2. Step 2: Convert to fraction form
    65,576.68/90,491.16 = 38,717.80/x
  3. Step 3: Cross multiply
    65,576.68x = 90,491.16 × 38,717.80
  4. Step 4: Simplify right side
    65,576.68x = 3,503,618,634.65
  5. Step 5: Solve for x
    x = 3,503,618,634.65/65,576.68
  6. Step 6: Final answer
    x = 53,427.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.