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Finding the Fourth Proportional to 54,360.90, 75,021.26 and 30,488.90

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Solution

The fourth proportional to 54,360.90, 75,021.26 and 30,488.90 is: 42,076.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,360.90 : 75,021.26 = 30,488.90 : x
  2. Step 2: Convert to fraction form
    54,360.90/75,021.26 = 30,488.90/x
  3. Step 3: Cross multiply
    54,360.90x = 75,021.26 × 30,488.90
  4. Step 4: Simplify right side
    54,360.90x = 2,287,315,166.46
  5. Step 5: Solve for x
    x = 2,287,315,166.46/54,360.90
  6. Step 6: Final answer
    x = 42,076.48

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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.