Home / 57,827.76-86,718.96-20,379.84

Finding the Fourth Proportional to 57,827.76, 86,718.96 and 20,379.84

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Solution

The fourth proportional to 57,827.76, 86,718.96 and 20,379.84 is: 30,561.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,827.76 : 86,718.96 = 20,379.84 : x
  2. Step 2: Convert to fraction form
    57,827.76/86,718.96 = 20,379.84/x
  3. Step 3: Cross multiply
    57,827.76x = 86,718.96 × 20,379.84
  4. Step 4: Simplify right side
    57,827.76x = 1,767,318,529.77
  5. Step 5: Solve for x
    x = 1,767,318,529.77/57,827.76
  6. Step 6: Final answer
    x = 30,561.77

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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.