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Finding the Fourth Proportional to 71,505.99, 98,673.96 and 39,672.99

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Solution

The fourth proportional to 71,505.99, 98,673.96 and 39,672.99 is: 54,746.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,505.99 : 98,673.96 = 39,672.99 : x
  2. Step 2: Convert to fraction form
    71,505.99/98,673.96 = 39,672.99/x
  3. Step 3: Cross multiply
    71,505.99x = 98,673.96 × 39,672.99
  4. Step 4: Simplify right side
    71,505.99x = 3,914,691,028.34
  5. Step 5: Solve for x
    x = 3,914,691,028.34/71,505.99
  6. Step 6: Final answer
    x = 54,746.34

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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.