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Finding the Fourth Proportional to 57,240.77, 85,910.56 and 39,722.90

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Solution

The fourth proportional to 57,240.77, 85,910.56 and 39,722.90 is: 59,618.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,240.77 : 85,910.56 = 39,722.90 : x
  2. Step 2: Convert to fraction form
    57,240.77/85,910.56 = 39,722.90/x
  3. Step 3: Cross multiply
    57,240.77x = 85,910.56 × 39,722.90
  4. Step 4: Simplify right side
    57,240.77x = 3,412,616,054.96
  5. Step 5: Solve for x
    x = 3,412,616,054.96/57,240.77
  6. Step 6: Final answer
    x = 59,618.63

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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.