Home / 67,781.05-101,670.98-20,395.90

Finding the Fourth Proportional to 67,781.05, 101,670.98 and 20,395.90

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Solution

The fourth proportional to 67,781.05, 101,670.98 and 20,395.90 is: 30,593.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,781.05 : 101,670.98 = 20,395.90 : x
  2. Step 2: Convert to fraction form
    67,781.05/101,670.98 = 20,395.90/x
  3. Step 3: Cross multiply
    67,781.05x = 101,670.98 × 20,395.90
  4. Step 4: Simplify right side
    67,781.05x = 2,073,671,140.98
  5. Step 5: Solve for x
    x = 2,073,671,140.98/67,781.05
  6. Step 6: Final answer
    x = 30,593.67

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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.