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Finding the Fourth Proportional to 62,631, 86,476.14 and 40,313.88

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Solution

The fourth proportional to 62,631, 86,476.14 and 40,313.88 is: 55,662.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,631 : 86,476.14 = 40,313.88 : x
  2. Step 2: Convert to fraction form
    62,631/86,476.14 = 40,313.88/x
  3. Step 3: Cross multiply
    62,631x = 86,476.14 × 40,313.88
  4. Step 4: Simplify right side
    62,631x = 3,486,188,730.82
  5. Step 5: Solve for x
    x = 3,486,188,730.82/62,631
  6. Step 6: Final answer
    x = 55,662.35

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1.5x scale

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.