Home / 71,968.02-99,315.68-40,136.96

Finding the Fourth Proportional to 71,968.02, 99,315.68 and 40,136.96

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Solution

The fourth proportional to 71,968.02, 99,315.68 and 40,136.96 is: 55,388.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,968.02 : 99,315.68 = 40,136.96 : x
  2. Step 2: Convert to fraction form
    71,968.02/99,315.68 = 40,136.96/x
  3. Step 3: Cross multiply
    71,968.02x = 99,315.68 × 40,136.96
  4. Step 4: Simplify right side
    71,968.02x = 3,986,228,778.27
  5. Step 5: Solve for x
    x = 3,986,228,778.27/71,968.02
  6. Step 6: Final answer
    x = 55,388.89

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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.