Home / 57,529.20-86,212.80-45,703.20

Finding the Fourth Proportional to 57,529.20, 86,212.80 and 45,703.20

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Solution

The fourth proportional to 57,529.20, 86,212.80 and 45,703.20 is: 68,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,529.20 : 86,212.80 = 45,703.20 : x
  2. Step 2: Convert to fraction form
    57,529.20/86,212.80 = 45,703.20/x
  3. Step 3: Cross multiply
    57,529.20x = 86,212.80 × 45,703.20
  4. Step 4: Simplify right side
    57,529.20x = 3,940,200,840.96
  5. Step 5: Solve for x
    x = 3,940,200,840.96/57,529.20
  6. Step 6: Final answer
    x = 68,490.45

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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.