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Finding the Fourth Proportional to 83,805.48, 115,817.52 and 68,674.32

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Solution

The fourth proportional to 83,805.48, 115,817.52 and 68,674.32 is: 94,906.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,805.48 : 115,817.52 = 68,674.32 : x
  2. Step 2: Convert to fraction form
    83,805.48/115,817.52 = 68,674.32/x
  3. Step 3: Cross multiply
    83,805.48x = 115,817.52 × 68,674.32
  4. Step 4: Simplify right side
    83,805.48x = 7,953,689,430.09
  5. Step 5: Solve for x
    x = 7,953,689,430.09/83,805.48
  6. Step 6: Final answer
    x = 94,906.56

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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.