Home / 31,455,358.49-43,386,034.05-20,996,101.36

Finding the Fourth Proportional to 31,455,358.49, 43,386,034.05 and 20,996,101.36

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Solution

The fourth proportional to 31,455,358.49, 43,386,034.05 and 20,996,101.36 is: 28,959,694.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455,358.49 : 43,386,034.05 = 20,996,101.36 : x
  2. Step 2: Convert to fraction form
    31,455,358.49/43,386,034.05 = 20,996,101.36/x
  3. Step 3: Cross multiply
    31,455,358.49x = 43,386,034.05 × 20,996,101.36
  4. Step 4: Simplify right side
    31,455,358.49x = 910,937,568,576,443.75
  5. Step 5: Solve for x
    x = 910,937,568,576,443.75/31,455,358.49
  6. Step 6: Final answer
    x = 28,959,694.38

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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.