Home / 81,147.36-111,849.52-54,280.20

Finding the Fourth Proportional to 81,147.36, 111,849.52 and 54,280.20

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Solution

The fourth proportional to 81,147.36, 111,849.52 and 54,280.20 is: 74,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,147.36 : 111,849.52 = 54,280.20 : x
  2. Step 2: Convert to fraction form
    81,147.36/111,849.52 = 54,280.20/x
  3. Step 3: Cross multiply
    81,147.36x = 111,849.52 × 54,280.20
  4. Step 4: Simplify right side
    81,147.36x = 6,071,214,315.50
  5. Step 5: Solve for x
    x = 6,071,214,315.50/81,147.36
  6. Step 6: Final answer
    x = 74,817.15

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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.