Home / 71,428.52-98,571.42-39,597.80

Finding the Fourth Proportional to 71,428.52, 98,571.42 and 39,597.80

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Solution

The fourth proportional to 71,428.52, 98,571.42 and 39,597.80 is: 54,645.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,428.52 : 98,571.42 = 39,597.80 : x
  2. Step 2: Convert to fraction form
    71,428.52/98,571.42 = 39,597.80/x
  3. Step 3: Cross multiply
    71,428.52x = 98,571.42 × 39,597.80
  4. Step 4: Simplify right side
    71,428.52x = 3,903,211,374.88
  5. Step 5: Solve for x
    x = 3,903,211,374.88/71,428.52
  6. Step 6: Final answer
    x = 54,645.00

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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.