Home / 276,725.90-415,089.15-77,046.72

Finding the Fourth Proportional to 276,725.90, 415,089.15 and 77,046.72

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Solution

The fourth proportional to 276,725.90, 415,089.15 and 77,046.72 is: 115,570.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,725.90 : 415,089.15 = 77,046.72 : x
  2. Step 2: Convert to fraction form
    276,725.90/415,089.15 = 77,046.72/x
  3. Step 3: Cross multiply
    276,725.90x = 415,089.15 × 77,046.72
  4. Step 4: Simplify right side
    276,725.90x = 31,981,257,515.09
  5. Step 5: Solve for x
    x = 31,981,257,515.09/276,725.90
  6. Step 6: Final answer
    x = 115,570.16

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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.