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Finding the Fourth Proportional to 62,687.36, 86,478.40 and 36,176

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Solution

The fourth proportional to 62,687.36, 86,478.40 and 36,176 is: 49,905.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,687.36 : 86,478.40 = 36,176 : x
  2. Step 2: Convert to fraction form
    62,687.36/86,478.40 = 36,176/x
  3. Step 3: Cross multiply
    62,687.36x = 86,478.40 × 36,176
  4. Step 4: Simplify right side
    62,687.36x = 3,128,442,598.40
  5. Step 5: Solve for x
    x = 3,128,442,598.40/62,687.36
  6. Step 6: Final answer
    x = 49,905.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.