Home / 40,564,600.78-55,979,198.29-21,979,726.25

Finding the Fourth Proportional to 40,564,600.78, 55,979,198.29 and 21,979,726.25

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Solution

The fourth proportional to 40,564,600.78, 55,979,198.29 and 21,979,726.25 is: 30,332,048.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,564,600.78 : 55,979,198.29 = 21,979,726.25 : x
  2. Step 2: Convert to fraction form
    40,564,600.78/55,979,198.29 = 21,979,726.25/x
  3. Step 3: Cross multiply
    40,564,600.78x = 55,979,198.29 × 21,979,726.25
  4. Step 4: Simplify right side
    40,564,600.78x = 1,230,407,454,108,668
  5. Step 5: Solve for x
    x = 1,230,407,454,108,668/40,564,600.78
  6. Step 6: Final answer
    x = 30,332,048.89

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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.