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Finding the Fourth Proportional to 81,337.92, 112,212.36 and 53,042.64

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Solution

The fourth proportional to 81,337.92, 112,212.36 and 53,042.64 is: 73,176.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,337.92 : 112,212.36 = 53,042.64 : x
  2. Step 2: Convert to fraction form
    81,337.92/112,212.36 = 53,042.64/x
  3. Step 3: Cross multiply
    81,337.92x = 112,212.36 × 53,042.64
  4. Step 4: Simplify right side
    81,337.92x = 5,952,039,815.03
  5. Step 5: Solve for x
    x = 5,952,039,815.03/81,337.92
  6. Step 6: Final answer
    x = 73,176.69

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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.