Home / 67,132.72-100,699.40-20,386

Finding the Fourth Proportional to 67,132.72, 100,699.40 and 20,386

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Solution

The fourth proportional to 67,132.72, 100,699.40 and 20,386 is: 30,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,132.72 : 100,699.40 = 20,386 : x
  2. Step 2: Convert to fraction form
    67,132.72/100,699.40 = 20,386/x
  3. Step 3: Cross multiply
    67,132.72x = 100,699.40 × 20,386
  4. Step 4: Simplify right side
    67,132.72x = 2,052,857,968.40
  5. Step 5: Solve for x
    x = 2,052,857,968.40/67,132.72
  6. Step 6: Final answer
    x = 30,579.10

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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.