Home / 72,313,057.20-108,470,467.80-21,196,109.28

Finding the Fourth Proportional to 72,313,057.20, 108,470,467.80 and 21,196,109.28

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Solution

The fourth proportional to 72,313,057.20, 108,470,467.80 and 21,196,109.28 is: 31,794,422.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,313,057.20 : 108,470,467.80 = 21,196,109.28 : x
  2. Step 2: Convert to fraction form
    72,313,057.20/108,470,467.80 = 21,196,109.28/x
  3. Step 3: Cross multiply
    72,313,057.20x = 108,470,467.80 × 21,196,109.28
  4. Step 4: Simplify right side
    72,313,057.20x = 2,299,151,889,141,521.50
  5. Step 5: Solve for x
    x = 2,299,151,889,141,521.50/72,313,057.20
  6. Step 6: Final answer
    x = 31,794,422.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.