Home / 45,306.78-67,969.59-13,718.61

Finding the Fourth Proportional to 45,306.78, 67,969.59 and 13,718.61

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Solution

The fourth proportional to 45,306.78, 67,969.59 and 13,718.61 is: 20,580.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,306.78 : 67,969.59 = 13,718.61 : x
  2. Step 2: Convert to fraction form
    45,306.78/67,969.59 = 13,718.61/x
  3. Step 3: Cross multiply
    45,306.78x = 67,969.59 × 13,718.61
  4. Step 4: Simplify right side
    45,306.78x = 932,448,297.07
  5. Step 5: Solve for x
    x = 932,448,297.07/45,306.78
  6. Step 6: Final answer
    x = 20,580.77

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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.