Home / 81,424.10-122,136.15-28,816.10

Finding the Fourth Proportional to 81,424.10, 122,136.15 and 28,816.10

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Solution

The fourth proportional to 81,424.10, 122,136.15 and 28,816.10 is: 43,224.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424.10 : 122,136.15 = 28,816.10 : x
  2. Step 2: Convert to fraction form
    81,424.10/122,136.15 = 28,816.10/x
  3. Step 3: Cross multiply
    81,424.10x = 122,136.15 × 28,816.10
  4. Step 4: Simplify right side
    81,424.10x = 3,519,487,512.02
  5. Step 5: Solve for x
    x = 3,519,487,512.02/81,424.10
  6. Step 6: Final answer
    x = 43,224.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.