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Finding the Fourth Proportional to 67,615.56, 101,422.08 and 20,230.68

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Solution

The fourth proportional to 67,615.56, 101,422.08 and 20,230.68 is: 30,345.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,615.56 : 101,422.08 = 20,230.68 : x
  2. Step 2: Convert to fraction form
    67,615.56/101,422.08 = 20,230.68/x
  3. Step 3: Cross multiply
    67,615.56x = 101,422.08 × 20,230.68
  4. Step 4: Simplify right side
    67,615.56x = 2,051,837,645.41
  5. Step 5: Solve for x
    x = 2,051,837,645.41/67,615.56
  6. Step 6: Final answer
    x = 30,345.64

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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.