Home / 71,736.87-98,996.79-39,905.10

Finding the Fourth Proportional to 71,736.87, 98,996.79 and 39,905.10

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Solution

The fourth proportional to 71,736.87, 98,996.79 and 39,905.10 is: 55,068.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,736.87 : 98,996.79 = 39,905.10 : x
  2. Step 2: Convert to fraction form
    71,736.87/98,996.79 = 39,905.10/x
  3. Step 3: Cross multiply
    71,736.87x = 98,996.79 × 39,905.10
  4. Step 4: Simplify right side
    71,736.87x = 3,950,476,804.63
  5. Step 5: Solve for x
    x = 3,950,476,804.63/71,736.87
  6. Step 6: Final answer
    x = 55,068.99

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1.5x scale

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.