Home / 91,976.36-137,935.38-39,371.72

Finding the Fourth Proportional to 91,976.36, 137,935.38 and 39,371.72

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Solution

The fourth proportional to 91,976.36, 137,935.38 and 39,371.72 is: 59,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,976.36 : 137,935.38 = 39,371.72 : x
  2. Step 2: Convert to fraction form
    91,976.36/137,935.38 = 39,371.72/x
  3. Step 3: Cross multiply
    91,976.36x = 137,935.38 × 39,371.72
  4. Step 4: Simplify right side
    91,976.36x = 5,430,753,159.45
  5. Step 5: Solve for x
    x = 5,430,753,159.45/91,976.36
  6. Step 6: Final answer
    x = 59,045.10

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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.