Home / 81,621.38-112,637.91-47,653.43

Finding the Fourth Proportional to 81,621.38, 112,637.91 and 47,653.43

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Solution

The fourth proportional to 81,621.38, 112,637.91 and 47,653.43 is: 65,761.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,621.38 : 112,637.91 = 47,653.43 : x
  2. Step 2: Convert to fraction form
    81,621.38/112,637.91 = 47,653.43/x
  3. Step 3: Cross multiply
    81,621.38x = 112,637.91 × 47,653.43
  4. Step 4: Simplify right side
    81,621.38x = 5,367,582,196.34
  5. Step 5: Solve for x
    x = 5,367,582,196.34/81,621.38
  6. Step 6: Final answer
    x = 65,761.97

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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.