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Finding the Fourth Proportional to 71,127.80, 98,136.78 and 41,319.80

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Solution

The fourth proportional to 71,127.80, 98,136.78 and 41,319.80 is: 57,009.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,127.80 : 98,136.78 = 41,319.80 : x
  2. Step 2: Convert to fraction form
    71,127.80/98,136.78 = 41,319.80/x
  3. Step 3: Cross multiply
    71,127.80x = 98,136.78 × 41,319.80
  4. Step 4: Simplify right side
    71,127.80x = 4,054,992,122.24
  5. Step 5: Solve for x
    x = 4,054,992,122.24/71,127.80
  6. Step 6: Final answer
    x = 57,009.95

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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.