Home / 80,982.72-111,760.02-54,136.08

Finding the Fourth Proportional to 80,982.72, 111,760.02 and 54,136.08

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Solution

The fourth proportional to 80,982.72, 111,760.02 and 54,136.08 is: 74,710.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,982.72 : 111,760.02 = 54,136.08 : x
  2. Step 2: Convert to fraction form
    80,982.72/111,760.02 = 54,136.08/x
  3. Step 3: Cross multiply
    80,982.72x = 111,760.02 × 54,136.08
  4. Step 4: Simplify right side
    80,982.72x = 6,050,249,383.52
  5. Step 5: Solve for x
    x = 6,050,249,383.52/80,982.72
  6. Step 6: Final answer
    x = 74,710.38

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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.