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Finding the Fourth Proportional to 86,807.60, 130,218.60 and 27,641.60

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Solution

The fourth proportional to 86,807.60, 130,218.60 and 27,641.60 is: 41,464.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,807.60 : 130,218.60 = 27,641.60 : x
  2. Step 2: Convert to fraction form
    86,807.60/130,218.60 = 27,641.60/x
  3. Step 3: Cross multiply
    86,807.60x = 130,218.60 × 27,641.60
  4. Step 4: Simplify right side
    86,807.60x = 3,599,450,453.76
  5. Step 5: Solve for x
    x = 3,599,450,453.76/86,807.60
  6. Step 6: Final answer
    x = 41,464.69

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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.