Home / 276,712.08-415,026.78-77,011.65

Finding the Fourth Proportional to 276,712.08, 415,026.78 and 77,011.65

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Solution

The fourth proportional to 276,712.08, 415,026.78 and 77,011.65 is: 115,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,712.08 : 415,026.78 = 77,011.65 : x
  2. Step 2: Convert to fraction form
    276,712.08/415,026.78 = 77,011.65/x
  3. Step 3: Cross multiply
    276,712.08x = 415,026.78 × 77,011.65
  4. Step 4: Simplify right side
    276,712.08x = 31,961,897,121.99
  5. Step 5: Solve for x
    x = 31,961,897,121.99/276,712.08
  6. Step 6: Final answer
    x = 115,505.97

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1.5x scale

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.