Home / 82,489.48-123,678.66-38,091.76

Finding the Fourth Proportional to 82,489.48, 123,678.66 and 38,091.76

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Solution

The fourth proportional to 82,489.48, 123,678.66 and 38,091.76 is: 57,111.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,489.48 : 123,678.66 = 38,091.76 : x
  2. Step 2: Convert to fraction form
    82,489.48/123,678.66 = 38,091.76/x
  3. Step 3: Cross multiply
    82,489.48x = 123,678.66 × 38,091.76
  4. Step 4: Simplify right side
    82,489.48x = 4,711,137,833.84
  5. Step 5: Solve for x
    x = 4,711,137,833.84/82,489.48
  6. Step 6: Final answer
    x = 57,111.98

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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.