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Finding the Fourth Proportional to 37,749.80, 56,640.90 and 19,281.80

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Solution

The fourth proportional to 37,749.80, 56,640.90 and 19,281.80 is: 28,930.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,749.80 : 56,640.90 = 19,281.80 : x
  2. Step 2: Convert to fraction form
    37,749.80/56,640.90 = 19,281.80/x
  3. Step 3: Cross multiply
    37,749.80x = 56,640.90 × 19,281.80
  4. Step 4: Simplify right side
    37,749.80x = 1,092,138,505.62
  5. Step 5: Solve for x
    x = 1,092,138,505.62/37,749.80
  6. Step 6: Final answer
    x = 28,930.97

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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.