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Finding the Fourth Proportional to 76,891.17, 106,109.90 and 45,060.10

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Solution

The fourth proportional to 76,891.17, 106,109.90 and 45,060.10 is: 62,182.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,891.17 : 106,109.90 = 45,060.10 : x
  2. Step 2: Convert to fraction form
    76,891.17/106,109.90 = 45,060.10/x
  3. Step 3: Cross multiply
    76,891.17x = 106,109.90 × 45,060.10
  4. Step 4: Simplify right side
    76,891.17x = 4,781,322,383.39
  5. Step 5: Solve for x
    x = 4,781,322,383.39/76,891.17
  6. Step 6: Final answer
    x = 62,182.98

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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.