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Finding the Fourth Proportional to 56,408.76, 84,578.04 and 38,858.76

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Solution

The fourth proportional to 56,408.76, 84,578.04 and 38,858.76 is: 58,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,408.76 : 84,578.04 = 38,858.76 : x
  2. Step 2: Convert to fraction form
    56,408.76/84,578.04 = 38,858.76/x
  3. Step 3: Cross multiply
    56,408.76x = 84,578.04 × 38,858.76
  4. Step 4: Simplify right side
    56,408.76x = 3,286,597,757.63
  5. Step 5: Solve for x
    x = 3,286,597,757.63/56,408.76
  6. Step 6: Final answer
    x = 58,263.96

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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.