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Finding the Fourth Proportional to 55,408.71, 83,149.53 and 20,348.67

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Solution

The fourth proportional to 55,408.71, 83,149.53 and 20,348.67 is: 30,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,408.71 : 83,149.53 = 20,348.67 : x
  2. Step 2: Convert to fraction form
    55,408.71/83,149.53 = 20,348.67/x
  3. Step 3: Cross multiply
    55,408.71x = 83,149.53 × 20,348.67
  4. Step 4: Simplify right side
    55,408.71x = 1,691,982,346.63
  5. Step 5: Solve for x
    x = 1,691,982,346.63/55,408.71
  6. Step 6: Final answer
    x = 30,536.40

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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.