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Finding the Fourth Proportional to 54,010.90, 81,040.65 and 18,975.70

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Solution

The fourth proportional to 54,010.90, 81,040.65 and 18,975.70 is: 28,472.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,010.90 : 81,040.65 = 18,975.70 : x
  2. Step 2: Convert to fraction form
    54,010.90/81,040.65 = 18,975.70/x
  3. Step 3: Cross multiply
    54,010.90x = 81,040.65 × 18,975.70
  4. Step 4: Simplify right side
    54,010.90x = 1,537,803,062.21
  5. Step 5: Solve for x
    x = 1,537,803,062.21/54,010.90
  6. Step 6: Final answer
    x = 28,472.09

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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.