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Finding the Fourth Proportional to 67,720.59, 101,676.47 and 42,679.44

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Solution

The fourth proportional to 67,720.59, 101,676.47 and 42,679.44 is: 64,079.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,720.59 : 101,676.47 = 42,679.44 : x
  2. Step 2: Convert to fraction form
    67,720.59/101,676.47 = 42,679.44/x
  3. Step 3: Cross multiply
    67,720.59x = 101,676.47 × 42,679.44
  4. Step 4: Simplify right side
    67,720.59x = 4,339,494,587.38
  5. Step 5: Solve for x
    x = 4,339,494,587.38/67,720.59
  6. Step 6: Final answer
    x = 64,079.40

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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.