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Finding the Fourth Proportional to 62,676.90, 86,480.55 and 39,713.40

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Solution

The fourth proportional to 62,676.90, 86,480.55 and 39,713.40 is: 54,795.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,676.90 : 86,480.55 = 39,713.40 : x
  2. Step 2: Convert to fraction form
    62,676.90/86,480.55 = 39,713.40/x
  3. Step 3: Cross multiply
    62,676.90x = 86,480.55 × 39,713.40
  4. Step 4: Simplify right side
    62,676.90x = 3,434,436,674.37
  5. Step 5: Solve for x
    x = 3,434,436,674.37/62,676.90
  6. Step 6: Final answer
    x = 54,795.89

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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.