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Finding the Fourth Proportional to 86,077.65, 129,134.76 and 26,917.79

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Solution

The fourth proportional to 86,077.65, 129,134.76 and 26,917.79 is: 40,382.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,077.65 : 129,134.76 = 26,917.79 : x
  2. Step 2: Convert to fraction form
    86,077.65/129,134.76 = 26,917.79/x
  3. Step 3: Cross multiply
    86,077.65x = 129,134.76 × 26,917.79
  4. Step 4: Simplify right side
    86,077.65x = 3,476,021,604.76
  5. Step 5: Solve for x
    x = 3,476,021,604.76/86,077.65
  6. Step 6: Final answer
    x = 40,382.39

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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.