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Finding the Fourth Proportional to 57,858.50, 79,910.34 and 38,962.82

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Solution

The fourth proportional to 57,858.50, 79,910.34 and 38,962.82 is: 53,812.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,858.50 : 79,910.34 = 38,962.82 : x
  2. Step 2: Convert to fraction form
    57,858.50/79,910.34 = 38,962.82/x
  3. Step 3: Cross multiply
    57,858.50x = 79,910.34 × 38,962.82
  4. Step 4: Simplify right side
    57,858.50x = 3,113,532,193.56
  5. Step 5: Solve for x
    x = 3,113,532,193.56/57,858.50
  6. Step 6: Final answer
    x = 53,812.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.