Home / 71,121.03-98,143.38-39,283.77

Finding the Fourth Proportional to 71,121.03, 98,143.38 and 39,283.77

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Solution

The fourth proportional to 71,121.03, 98,143.38 and 39,283.77 is: 54,209.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,121.03 : 98,143.38 = 39,283.77 : x
  2. Step 2: Convert to fraction form
    71,121.03/98,143.38 = 39,283.77/x
  3. Step 3: Cross multiply
    71,121.03x = 98,143.38 × 39,283.77
  4. Step 4: Simplify right side
    71,121.03x = 3,855,441,966.94
  5. Step 5: Solve for x
    x = 3,855,441,966.94/71,121.03
  6. Step 6: Final answer
    x = 54,209.59

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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.