Home / 67,170.83-100,752.60-20,420.06

Finding the Fourth Proportional to 67,170.83, 100,752.60 and 20,420.06

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Solution

The fourth proportional to 67,170.83, 100,752.60 and 20,420.06 is: 30,628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,170.83 : 100,752.60 = 20,420.06 : x
  2. Step 2: Convert to fraction form
    67,170.83/100,752.60 = 20,420.06/x
  3. Step 3: Cross multiply
    67,170.83x = 100,752.60 × 20,420.06
  4. Step 4: Simplify right side
    67,170.83x = 2,057,374,389.04
  5. Step 5: Solve for x
    x = 2,057,374,389.04/67,170.83
  6. Step 6: Final answer
    x = 30,628.98

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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.