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Finding the Fourth Proportional to 91,243.82, 136,866.36 and 28,063.28

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Solution

The fourth proportional to 91,243.82, 136,866.36 and 28,063.28 is: 42,095.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,243.82 : 136,866.36 = 28,063.28 : x
  2. Step 2: Convert to fraction form
    91,243.82/136,866.36 = 28,063.28/x
  3. Step 3: Cross multiply
    91,243.82x = 136,866.36 × 28,063.28
  4. Step 4: Simplify right side
    91,243.82x = 3,840,918,983.26
  5. Step 5: Solve for x
    x = 3,840,918,983.26/91,243.82
  6. Step 6: Final answer
    x = 42,095.11

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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.