Home / 39,634.92-54,678.24-31,688.28

Finding the Fourth Proportional to 39,634.92, 54,678.24 and 31,688.28

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Solution

The fourth proportional to 39,634.92, 54,678.24 and 31,688.28 is: 43,715.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,634.92 : 54,678.24 = 31,688.28 : x
  2. Step 2: Convert to fraction form
    39,634.92/54,678.24 = 31,688.28/x
  3. Step 3: Cross multiply
    39,634.92x = 54,678.24 × 31,688.28
  4. Step 4: Simplify right side
    39,634.92x = 1,732,659,379.03
  5. Step 5: Solve for x
    x = 1,732,659,379.03/39,634.92
  6. Step 6: Final answer
    x = 43,715.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.