Home / 81,378,179.92-112,236,939.12-53,529,490.72

Finding the Fourth Proportional to 81,378,179.92, 112,236,939.12 and 53,529,490.72

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Solution

The fourth proportional to 81,378,179.92, 112,236,939.12 and 53,529,490.72 is: 73,827,974.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,378,179.92 : 112,236,939.12 = 53,529,490.72 : x
  2. Step 2: Convert to fraction form
    81,378,179.92/112,236,939.12 = 53,529,490.72/x
  3. Step 3: Cross multiply
    81,378,179.92x = 112,236,939.12 × 53,529,490.72
  4. Step 4: Simplify right side
    81,378,179.92x = 6,007,986,191,065,245
  5. Step 5: Solve for x
    x = 6,007,986,191,065,245/81,378,179.92
  6. Step 6: Final answer
    x = 73,827,974.49

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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.