Home / 82,012.96-123,056.08-39,869.92

Finding the Fourth Proportional to 82,012.96, 123,056.08 and 39,869.92

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Solution

The fourth proportional to 82,012.96, 123,056.08 and 39,869.92 is: 59,822.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,012.96 : 123,056.08 = 39,869.92 : x
  2. Step 2: Convert to fraction form
    82,012.96/123,056.08 = 39,869.92/x
  3. Step 3: Cross multiply
    82,012.96x = 123,056.08 × 39,869.92
  4. Step 4: Simplify right side
    82,012.96x = 4,906,236,065.11
  5. Step 5: Solve for x
    x = 4,906,236,065.11/82,012.96
  6. Step 6: Final answer
    x = 59,822.69

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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.