Home / 54,038.61-81,002.49-20,749.71

Finding the Fourth Proportional to 54,038.61, 81,002.49 and 20,749.71

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Solution

The fourth proportional to 54,038.61, 81,002.49 and 20,749.71 is: 31,103.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,038.61 : 81,002.49 = 20,749.71 : x
  2. Step 2: Convert to fraction form
    54,038.61/81,002.49 = 20,749.71/x
  3. Step 3: Cross multiply
    54,038.61x = 81,002.49 × 20,749.71
  4. Step 4: Simplify right side
    54,038.61x = 1,680,778,176.78
  5. Step 5: Solve for x
    x = 1,680,778,176.78/54,038.61
  6. Step 6: Final answer
    x = 31,103.28

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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.