Home / 276,947.21-415,420.82-66,585.15

Finding the Fourth Proportional to 276,947.21, 415,420.82 and 66,585.15

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Solution

The fourth proportional to 276,947.21, 415,420.82 and 66,585.15 is: 99,877.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,947.21 : 415,420.82 = 66,585.15 : x
  2. Step 2: Convert to fraction form
    276,947.21/415,420.82 = 66,585.15/x
  3. Step 3: Cross multiply
    276,947.21x = 415,420.82 × 66,585.15
  4. Step 4: Simplify right side
    276,947.21x = 27,660,857,612.82
  5. Step 5: Solve for x
    x = 27,660,857,612.82/276,947.21
  6. Step 6: Final answer
    x = 99,877.73

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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.