Home / 31,256,643.49-43,149,162.11-21,972,172.39

Finding the Fourth Proportional to 31,256,643.49, 43,149,162.11 and 21,972,172.39

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Solution

The fourth proportional to 31,256,643.49, 43,149,162.11 and 21,972,172.39 is: 30,332,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,256,643.49 : 43,149,162.11 = 21,972,172.39 : x
  2. Step 2: Convert to fraction form
    31,256,643.49/43,149,162.11 = 21,972,172.39/x
  3. Step 3: Cross multiply
    31,256,643.49x = 43,149,162.11 × 21,972,172.39
  4. Step 4: Simplify right side
    31,256,643.49x = 948,080,828,147,242.25
  5. Step 5: Solve for x
    x = 948,080,828,147,242.25/31,256,643.49
  6. Step 6: Final answer
    x = 30,332,138.14

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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.