Home / 71,711.36-98,954.10-39,875.12

Finding the Fourth Proportional to 71,711.36, 98,954.10 and 39,875.12

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Solution

The fourth proportional to 71,711.36, 98,954.10 and 39,875.12 is: 55,023.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,711.36 : 98,954.10 = 39,875.12 : x
  2. Step 2: Convert to fraction form
    71,711.36/98,954.10 = 39,875.12/x
  3. Step 3: Cross multiply
    71,711.36x = 98,954.10 × 39,875.12
  4. Step 4: Simplify right side
    71,711.36x = 3,945,806,611.99
  5. Step 5: Solve for x
    x = 3,945,806,611.99/71,711.36
  6. Step 6: Final answer
    x = 55,023.45

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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.