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Finding the Fourth Proportional to 54,189.55, 81,240.58 and 49,815.55

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Solution

The fourth proportional to 54,189.55, 81,240.58 and 49,815.55 is: 74,683.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,189.55 : 81,240.58 = 49,815.55 : x
  2. Step 2: Convert to fraction form
    54,189.55/81,240.58 = 49,815.55/x
  3. Step 3: Cross multiply
    54,189.55x = 81,240.58 × 49,815.55
  4. Step 4: Simplify right side
    54,189.55x = 4,047,044,175.02
  5. Step 5: Solve for x
    x = 4,047,044,175.02/54,189.55
  6. Step 6: Final answer
    x = 74,683.11

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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.