Home / 31,493,388.12-43,461,796.78-18,439,425.70

Finding the Fourth Proportional to 31,493,388.12, 43,461,796.78 and 18,439,425.70

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Solution

The fourth proportional to 31,493,388.12, 43,461,796.78 and 18,439,425.70 is: 25,446,946.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,493,388.12 : 43,461,796.78 = 18,439,425.70 : x
  2. Step 2: Convert to fraction form
    31,493,388.12/43,461,796.78 = 18,439,425.70/x
  3. Step 3: Cross multiply
    31,493,388.12x = 43,461,796.78 × 18,439,425.70
  4. Step 4: Simplify right side
    31,493,388.12x = 801,410,572,513,309.25
  5. Step 5: Solve for x
    x = 801,410,572,513,309.25/31,493,388.12
  6. Step 6: Final answer
    x = 25,446,946.81

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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.