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Finding the Fourth Proportional to 62,940, 86,786.32 and 45,914.28

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Solution

The fourth proportional to 62,940, 86,786.32 and 45,914.28 is: 63,310.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,940 : 86,786.32 = 45,914.28 : x
  2. Step 2: Convert to fraction form
    62,940/86,786.32 = 45,914.28/x
  3. Step 3: Cross multiply
    62,940x = 86,786.32 × 45,914.28
  4. Step 4: Simplify right side
    62,940x = 3,984,731,396.65
  5. Step 5: Solve for x
    x = 3,984,731,396.65/62,940
  6. Step 6: Final answer
    x = 63,310.00

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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.