Home / 71,782,540.38-99,059,401.80-39,187,492.38

Finding the Fourth Proportional to 71,782,540.38, 99,059,401.80 and 39,187,492.38

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Solution

The fourth proportional to 71,782,540.38, 99,059,401.80 and 39,187,492.38 is: 54,078,464.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,782,540.38 : 99,059,401.80 = 39,187,492.38 : x
  2. Step 2: Convert to fraction form
    71,782,540.38/99,059,401.80 = 39,187,492.38/x
  3. Step 3: Cross multiply
    71,782,540.38x = 99,059,401.80 × 39,187,492.38
  4. Step 4: Simplify right side
    71,782,540.38x = 3,881,889,553,204,858.50
  5. Step 5: Solve for x
    x = 3,881,889,553,204,858.50/71,782,540.38
  6. Step 6: Final answer
    x = 54,078,464.38

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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.