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Finding the Fourth Proportional to 86,728.58, 130,113.58 and 27,564.36

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Solution

The fourth proportional to 86,728.58, 130,113.58 and 27,564.36 is: 41,353.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,728.58 : 130,113.58 = 27,564.36 : x
  2. Step 2: Convert to fraction form
    86,728.58/130,113.58 = 27,564.36/x
  3. Step 3: Cross multiply
    86,728.58x = 130,113.58 × 27,564.36
  4. Step 4: Simplify right side
    86,728.58x = 3,586,497,560.01
  5. Step 5: Solve for x
    x = 3,586,497,560.01/86,728.58
  6. Step 6: Final answer
    x = 41,353.12

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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.