Home / 74,981.97-112,470.12-18,822.51

Finding the Fourth Proportional to 74,981.97, 112,470.12 and 18,822.51

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Solution

The fourth proportional to 74,981.97, 112,470.12 and 18,822.51 is: 28,233.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,981.97 : 112,470.12 = 18,822.51 : x
  2. Step 2: Convert to fraction form
    74,981.97/112,470.12 = 18,822.51/x
  3. Step 3: Cross multiply
    74,981.97x = 112,470.12 × 18,822.51
  4. Step 4: Simplify right side
    74,981.97x = 2,116,969,958.40
  5. Step 5: Solve for x
    x = 2,116,969,958.40/74,981.97
  6. Step 6: Final answer
    x = 28,233.05

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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.