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Finding the Fourth Proportional to 86,940.71, 130,322.83 and 49,423.26

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Solution

The fourth proportional to 86,940.71, 130,322.83 and 49,423.26 is: 74,084.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,940.71 : 130,322.83 = 49,423.26 : x
  2. Step 2: Convert to fraction form
    86,940.71/130,322.83 = 49,423.26/x
  3. Step 3: Cross multiply
    86,940.71x = 130,322.83 × 49,423.26
  4. Step 4: Simplify right side
    86,940.71x = 6,440,978,608.25
  5. Step 5: Solve for x
    x = 6,440,978,608.25/86,940.71
  6. Step 6: Final answer
    x = 74,084.73

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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.