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Finding the Fourth Proportional to 82,920.51, 114,759.17 and 80,930.68

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Solution

The fourth proportional to 82,920.51, 114,759.17 and 80,930.68 is: 112,005.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,920.51 : 114,759.17 = 80,930.68 : x
  2. Step 2: Convert to fraction form
    82,920.51/114,759.17 = 80,930.68/x
  3. Step 3: Cross multiply
    82,920.51x = 114,759.17 × 80,930.68
  4. Step 4: Simplify right side
    82,920.51x = 9,287,537,664.34
  5. Step 5: Solve for x
    x = 9,287,537,664.34/82,920.51
  6. Step 6: Final answer
    x = 112,005.31

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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.