Home / 54,653.92-75,422.66-30,781

Finding the Fourth Proportional to 54,653.92, 75,422.66 and 30,781

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Solution

The fourth proportional to 54,653.92, 75,422.66 and 30,781 is: 42,477.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,653.92 : 75,422.66 = 30,781 : x
  2. Step 2: Convert to fraction form
    54,653.92/75,422.66 = 30,781/x
  3. Step 3: Cross multiply
    54,653.92x = 75,422.66 × 30,781
  4. Step 4: Simplify right side
    54,653.92x = 2,321,584,897.46
  5. Step 5: Solve for x
    x = 2,321,584,897.46/54,653.92
  6. Step 6: Final answer
    x = 42,477.92

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1.5x scale

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.