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Finding the Fourth Proportional to 71,672,159.76, 107,508,633.30 and 17,819,471.76

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Solution

The fourth proportional to 71,672,159.76, 107,508,633.30 and 17,819,471.76 is: 26,729,305.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,672,159.76 : 107,508,633.30 = 17,819,471.76 : x
  2. Step 2: Convert to fraction form
    71,672,159.76/107,508,633.30 = 17,819,471.76/x
  3. Step 3: Cross multiply
    71,672,159.76x = 107,508,633.30 × 17,819,471.76
  4. Step 4: Simplify right side
    71,672,159.76x = 1,915,747,055,045,545.75
  5. Step 5: Solve for x
    x = 1,915,747,055,045,545.75/71,672,159.76
  6. Step 6: Final answer
    x = 26,729,305.51

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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.