Home / 81,384.22-112,304.78-45,083.21

Finding the Fourth Proportional to 81,384.22, 112,304.78 and 45,083.21

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Solution

The fourth proportional to 81,384.22, 112,304.78 and 45,083.21 is: 62,211.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,384.22 : 112,304.78 = 45,083.21 : x
  2. Step 2: Convert to fraction form
    81,384.22/112,304.78 = 45,083.21/x
  3. Step 3: Cross multiply
    81,384.22x = 112,304.78 × 45,083.21
  4. Step 4: Simplify right side
    81,384.22x = 5,063,059,980.74
  5. Step 5: Solve for x
    x = 5,063,059,980.74/81,384.22
  6. Step 6: Final answer
    x = 62,211.81

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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.