Home / 30,867.12-42,679.44-29,448

Finding the Fourth Proportional to 30,867.12, 42,679.44 and 29,448

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Solution

The fourth proportional to 30,867.12, 42,679.44 and 29,448 is: 40,717.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,867.12 : 42,679.44 = 29,448 : x
  2. Step 2: Convert to fraction form
    30,867.12/42,679.44 = 29,448/x
  3. Step 3: Cross multiply
    30,867.12x = 42,679.44 × 29,448
  4. Step 4: Simplify right side
    30,867.12x = 1,256,824,149.12
  5. Step 5: Solve for x
    x = 1,256,824,149.12/30,867.12
  6. Step 6: Final answer
    x = 40,717.25

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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.