Home / 78,385,889.94-108,172,948.40-43,105,969.56

Finding the Fourth Proportional to 78,385,889.94, 108,172,948.40 and 43,105,969.56

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Solution

The fourth proportional to 78,385,889.94, 108,172,948.40 and 43,105,969.56 is: 59,486,469.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,385,889.94 : 108,172,948.40 = 43,105,969.56 : x
  2. Step 2: Convert to fraction form
    78,385,889.94/108,172,948.40 = 43,105,969.56/x
  3. Step 3: Cross multiply
    78,385,889.94x = 108,172,948.40 × 43,105,969.56
  4. Step 4: Simplify right side
    78,385,889.94x = 4,662,899,821,297,617
  5. Step 5: Solve for x
    x = 4,662,899,821,297,617/78,385,889.94
  6. Step 6: Final answer
    x = 59,486,469.12

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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.