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Finding the Fourth Proportional to 72,486.92, 100,032.92 and 54,305.36

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Solution

The fourth proportional to 72,486.92, 100,032.92 and 54,305.36 is: 74,942.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,486.92 : 100,032.92 = 54,305.36 : x
  2. Step 2: Convert to fraction form
    72,486.92/100,032.92 = 54,305.36/x
  3. Step 3: Cross multiply
    72,486.92x = 100,032.92 × 54,305.36
  4. Step 4: Simplify right side
    72,486.92x = 5,432,322,960.76
  5. Step 5: Solve for x
    x = 5,432,322,960.76/72,486.92
  6. Step 6: Final answer
    x = 74,942.12

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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.