Home / 31,275,436.70-43,112,262.42-21,956,864.81

Finding the Fourth Proportional to 31,275,436.70, 43,112,262.42 and 21,956,864.81

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Solution

The fourth proportional to 31,275,436.70, 43,112,262.42 and 21,956,864.81 is: 30,266,887.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,275,436.70 : 43,112,262.42 = 21,956,864.81 : x
  2. Step 2: Convert to fraction form
    31,275,436.70/43,112,262.42 = 21,956,864.81/x
  3. Step 3: Cross multiply
    31,275,436.70x = 43,112,262.42 × 21,956,864.81
  4. Step 4: Simplify right side
    31,275,436.70x = 946,610,117,393,622.12
  5. Step 5: Solve for x
    x = 946,610,117,393,622.12/31,275,436.70
  6. Step 6: Final answer
    x = 30,266,887.28

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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.