Home / 71,428.45-98,571.39-39,597.34

Finding the Fourth Proportional to 71,428.45, 98,571.39 and 39,597.34

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Solution

The fourth proportional to 71,428.45, 98,571.39 and 39,597.34 is: 54,644.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,428.45 : 98,571.39 = 39,597.34 : x
  2. Step 2: Convert to fraction form
    71,428.45/98,571.39 = 39,597.34/x
  3. Step 3: Cross multiply
    71,428.45x = 98,571.39 × 39,597.34
  4. Step 4: Simplify right side
    71,428.45x = 3,903,165,328.27
  5. Step 5: Solve for x
    x = 3,903,165,328.27/71,428.45
  6. Step 6: Final answer
    x = 54,644.41

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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.