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Finding the Fourth Proportional to 276,949.96, 415,424.96 and 66,587.88

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Solution

The fourth proportional to 276,949.96, 415,424.96 and 66,587.88 is: 99,881.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,949.96 : 415,424.96 = 66,587.88 : x
  2. Step 2: Convert to fraction form
    276,949.96/415,424.96 = 66,587.88/x
  3. Step 3: Cross multiply
    276,949.96x = 415,424.96 × 66,587.88
  4. Step 4: Simplify right side
    276,949.96x = 27,662,267,385.48
  5. Step 5: Solve for x
    x = 27,662,267,385.48/276,949.96
  6. Step 6: Final answer
    x = 99,881.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.