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Finding the Fourth Proportional to 67,459.68, 101,170.31 and 20,072.88

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Solution

The fourth proportional to 67,459.68, 101,170.31 and 20,072.88 is: 30,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,459.68 : 101,170.31 = 20,072.88 : x
  2. Step 2: Convert to fraction form
    67,459.68/101,170.31 = 20,072.88/x
  3. Step 3: Cross multiply
    67,459.68x = 101,170.31 × 20,072.88
  4. Step 4: Simplify right side
    67,459.68x = 2,030,779,391.83
  5. Step 5: Solve for x
    x = 2,030,779,391.83/67,459.68
  6. Step 6: Final answer
    x = 30,103.60

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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.