Home / 84,121.38-126,001.08-39,681.54

Finding the Fourth Proportional to 84,121.38, 126,001.08 and 39,681.54

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Solution

The fourth proportional to 84,121.38, 126,001.08 and 39,681.54 is: 59,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,121.38 : 126,001.08 = 39,681.54 : x
  2. Step 2: Convert to fraction form
    84,121.38/126,001.08 = 39,681.54/x
  3. Step 3: Cross multiply
    84,121.38x = 126,001.08 × 39,681.54
  4. Step 4: Simplify right side
    84,121.38x = 4,999,916,896.06
  5. Step 5: Solve for x
    x = 4,999,916,896.06/84,121.38
  6. Step 6: Final answer
    x = 59,436.93

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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.