Home / 31,455,362.49-43,386,039.57-20,996,105.37

Finding the Fourth Proportional to 31,455,362.49, 43,386,039.57 and 20,996,105.37

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Solution

The fourth proportional to 31,455,362.49, 43,386,039.57 and 20,996,105.37 is: 28,959,699.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455,362.49 : 43,386,039.57 = 20,996,105.37 : x
  2. Step 2: Convert to fraction form
    31,455,362.49/43,386,039.57 = 20,996,105.37/x
  3. Step 3: Cross multiply
    31,455,362.49x = 43,386,039.57 × 20,996,105.37
  4. Step 4: Simplify right side
    31,455,362.49x = 910,937,858,398,709.50
  5. Step 5: Solve for x
    x = 910,937,858,398,709.50/31,455,362.49
  6. Step 6: Final answer
    x = 28,959,699.91

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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.