Home / 55,136.20-82,485.60-47,821.90

Finding the Fourth Proportional to 55,136.20, 82,485.60 and 47,821.90

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Solution

The fourth proportional to 55,136.20, 82,485.60 and 47,821.90 is: 71,543.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,136.20 : 82,485.60 = 47,821.90 : x
  2. Step 2: Convert to fraction form
    55,136.20/82,485.60 = 47,821.90/x
  3. Step 3: Cross multiply
    55,136.20x = 82,485.60 × 47,821.90
  4. Step 4: Simplify right side
    55,136.20x = 3,944,618,114.64
  5. Step 5: Solve for x
    x = 3,944,618,114.64/55,136.20
  6. Step 6: Final answer
    x = 71,543.16

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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.