Home / 81,630.91-112,653.62-47,661.13

Finding the Fourth Proportional to 81,630.91, 112,653.62 and 47,661.13

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Solution

The fourth proportional to 81,630.91, 112,653.62 and 47,661.13 is: 65,774.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,630.91 : 112,653.62 = 47,661.13 : x
  2. Step 2: Convert to fraction form
    81,630.91/112,653.62 = 47,661.13/x
  3. Step 3: Cross multiply
    81,630.91x = 112,653.62 × 47,661.13
  4. Step 4: Simplify right side
    81,630.91x = 5,369,198,827.79
  5. Step 5: Solve for x
    x = 5,369,198,827.79/81,630.91
  6. Step 6: Final answer
    x = 65,774.09

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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.