Home / 71,328.25-98,431.78-39,496.46

Finding the Fourth Proportional to 71,328.25, 98,431.78 and 39,496.46

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Solution

The fourth proportional to 71,328.25, 98,431.78 and 39,496.46 is: 54,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,328.25 : 98,431.78 = 39,496.46 : x
  2. Step 2: Convert to fraction form
    71,328.25/98,431.78 = 39,496.46/x
  3. Step 3: Cross multiply
    71,328.25x = 98,431.78 × 39,496.46
  4. Step 4: Simplify right side
    71,328.25x = 3,887,706,861.50
  5. Step 5: Solve for x
    x = 3,887,706,861.50/71,328.25
  6. Step 6: Final answer
    x = 54,504.45

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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.