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Finding the Fourth Proportional to 83,379.84, 115,165.18 and 60,682.84

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Solution

The fourth proportional to 83,379.84, 115,165.18 and 60,682.84 is: 83,815.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,379.84 : 115,165.18 = 60,682.84 : x
  2. Step 2: Convert to fraction form
    83,379.84/115,165.18 = 60,682.84/x
  3. Step 3: Cross multiply
    83,379.84x = 115,165.18 × 60,682.84
  4. Step 4: Simplify right side
    83,379.84x = 6,988,550,191.51
  5. Step 5: Solve for x
    x = 6,988,550,191.51/83,379.84
  6. Step 6: Final answer
    x = 83,815.83

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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.