Home / 54,078.89-74,628.07-30,205.90

Finding the Fourth Proportional to 54,078.89, 74,628.07 and 30,205.90

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Solution

The fourth proportional to 54,078.89, 74,628.07 and 30,205.90 is: 41,683.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,078.89 : 74,628.07 = 30,205.90 : x
  2. Step 2: Convert to fraction form
    54,078.89/74,628.07 = 30,205.90/x
  3. Step 3: Cross multiply
    54,078.89x = 74,628.07 × 30,205.90
  4. Step 4: Simplify right side
    54,078.89x = 2,254,208,019.61
  5. Step 5: Solve for x
    x = 2,254,208,019.61/54,078.89
  6. Step 6: Final answer
    x = 41,683.70

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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.