Home / 72,068,461.70-108,121,126.89-20,950,480.51

Finding the Fourth Proportional to 72,068,461.70, 108,121,126.89 and 20,950,480.51

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Solution

The fourth proportional to 72,068,461.70, 108,121,126.89 and 20,950,480.51 is: 31,431,079.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,068,461.70 : 108,121,126.89 = 20,950,480.51 : x
  2. Step 2: Convert to fraction form
    72,068,461.70/108,121,126.89 = 20,950,480.51/x
  3. Step 3: Cross multiply
    72,068,461.70x = 108,121,126.89 × 20,950,480.51
  4. Step 4: Simplify right side
    72,068,461.70x = 2,265,189,560,982,824
  5. Step 5: Solve for x
    x = 2,265,189,560,982,824/72,068,461.70
  6. Step 6: Final answer
    x = 31,431,079.67

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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.