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Finding the Fourth Proportional to 38,603.70, 57,905.55 and 37,072.80

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Solution

The fourth proportional to 38,603.70, 57,905.55 and 37,072.80 is: 55,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,603.70 : 57,905.55 = 37,072.80 : x
  2. Step 2: Convert to fraction form
    38,603.70/57,905.55 = 37,072.80/x
  3. Step 3: Cross multiply
    38,603.70x = 57,905.55 × 37,072.80
  4. Step 4: Simplify right side
    38,603.70x = 2,146,720,874.04
  5. Step 5: Solve for x
    x = 2,146,720,874.04/38,603.70
  6. Step 6: Final answer
    x = 55,609.20

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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.