Home / 63,666-87,867.18-38,515.68

Finding the Fourth Proportional to 63,666, 87,867.18 and 38,515.68

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Solution

The fourth proportional to 63,666, 87,867.18 and 38,515.68 is: 53,156.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,666 : 87,867.18 = 38,515.68 : x
  2. Step 2: Convert to fraction form
    63,666/87,867.18 = 38,515.68/x
  3. Step 3: Cross multiply
    63,666x = 87,867.18 × 38,515.68
  4. Step 4: Simplify right side
    63,666x = 3,384,264,187.38
  5. Step 5: Solve for x
    x = 3,384,264,187.38/63,666
  6. Step 6: Final answer
    x = 53,156.54

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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.