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Finding the Fourth Proportional to 81,838.80, 114,807.60 and 81,838.80

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Solution

The fourth proportional to 81,838.80, 114,807.60 and 81,838.80 is: 114,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,838.80 : 114,807.60 = 81,838.80 : x
  2. Step 2: Convert to fraction form
    81,838.80/114,807.60 = 81,838.80/x
  3. Step 3: Cross multiply
    81,838.80x = 114,807.60 × 81,838.80
  4. Step 4: Simplify right side
    81,838.80x = 9,395,716,214.88
  5. Step 5: Solve for x
    x = 9,395,716,214.88/81,838.80
  6. Step 6: Final answer
    x = 114,807.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.