Home / 69,721.91-96,216.19-37,890.81

Finding the Fourth Proportional to 69,721.91, 96,216.19 and 37,890.81

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Solution

The fourth proportional to 69,721.91, 96,216.19 and 37,890.81 is: 52,289.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,721.91 : 96,216.19 = 37,890.81 : x
  2. Step 2: Convert to fraction form
    69,721.91/96,216.19 = 37,890.81/x
  3. Step 3: Cross multiply
    69,721.91x = 96,216.19 × 37,890.81
  4. Step 4: Simplify right side
    69,721.91x = 3,645,709,279.49
  5. Step 5: Solve for x
    x = 3,645,709,279.49/69,721.91
  6. Step 6: Final answer
    x = 52,289.30

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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.