Home / 86,697.09-129,939.30-49,288.50

Finding the Fourth Proportional to 86,697.09, 129,939.30 and 49,288.50

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Solution

The fourth proportional to 86,697.09, 129,939.30 and 49,288.50 is: 73,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,697.09 : 129,939.30 = 49,288.50 : x
  2. Step 2: Convert to fraction form
    86,697.09/129,939.30 = 49,288.50/x
  3. Step 3: Cross multiply
    86,697.09x = 129,939.30 × 49,288.50
  4. Step 4: Simplify right side
    86,697.09x = 6,404,513,188.05
  5. Step 5: Solve for x
    x = 6,404,513,188.05/86,697.09
  6. Step 6: Final answer
    x = 73,872.30

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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.