Home / 86,912.70-130,343.94-39,501.38

Finding the Fourth Proportional to 86,912.70, 130,343.94 and 39,501.38

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Solution

The fourth proportional to 86,912.70, 130,343.94 and 39,501.38 is: 59,240.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,912.70 : 130,343.94 = 39,501.38 : x
  2. Step 2: Convert to fraction form
    86,912.70/130,343.94 = 39,501.38/x
  3. Step 3: Cross multiply
    86,912.70x = 130,343.94 × 39,501.38
  4. Step 4: Simplify right side
    86,912.70x = 5,148,764,852.92
  5. Step 5: Solve for x
    x = 5,148,764,852.92/86,912.70
  6. Step 6: Final answer
    x = 59,240.65

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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.