Home / 42,274.60-63,325.78-20,020.50

Finding the Fourth Proportional to 42,274.60, 63,325.78 and 20,020.50

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Solution

The fourth proportional to 42,274.60, 63,325.78 and 20,020.50 is: 29,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,274.60 : 63,325.78 = 20,020.50 : x
  2. Step 2: Convert to fraction form
    42,274.60/63,325.78 = 20,020.50/x
  3. Step 3: Cross multiply
    42,274.60x = 63,325.78 × 20,020.50
  4. Step 4: Simplify right side
    42,274.60x = 1,267,813,778.49
  5. Step 5: Solve for x
    x = 1,267,813,778.49/42,274.60
  6. Step 6: Final answer
    x = 29,989.97

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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.