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Finding the Fourth Proportional to 86,768.88, 130,039.56 and 49,346.16

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Solution

The fourth proportional to 86,768.88, 130,039.56 and 49,346.16 is: 73,954.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,768.88 : 130,039.56 = 49,346.16 : x
  2. Step 2: Convert to fraction form
    86,768.88/130,039.56 = 49,346.16/x
  3. Step 3: Cross multiply
    86,768.88x = 130,039.56 × 49,346.16
  4. Step 4: Simplify right side
    86,768.88x = 6,416,952,934.09
  5. Step 5: Solve for x
    x = 6,416,952,934.09/86,768.88
  6. Step 6: Final answer
    x = 73,954.54

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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.