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Finding the Fourth Proportional to 76,981.92, 115,486.92 and 27,047.04

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Solution

The fourth proportional to 76,981.92, 115,486.92 and 27,047.04 is: 40,575.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,981.92 : 115,486.92 = 27,047.04 : x
  2. Step 2: Convert to fraction form
    76,981.92/115,486.92 = 27,047.04/x
  3. Step 3: Cross multiply
    76,981.92x = 115,486.92 × 27,047.04
  4. Step 4: Simplify right side
    76,981.92x = 3,123,579,344.72
  5. Step 5: Solve for x
    x = 3,123,579,344.72/76,981.92
  6. Step 6: Final answer
    x = 40,575.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.