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Finding the Fourth Proportional to 62,339.63, 86,057 and 39,709.64

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Solution

The fourth proportional to 62,339.63, 86,057 and 39,709.64 is: 54,817.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,339.63 : 86,057 = 39,709.64 : x
  2. Step 2: Convert to fraction form
    62,339.63/86,057 = 39,709.64/x
  3. Step 3: Cross multiply
    62,339.63x = 86,057 × 39,709.64
  4. Step 4: Simplify right side
    62,339.63x = 3,417,292,489.48
  5. Step 5: Solve for x
    x = 3,417,292,489.48/62,339.63
  6. Step 6: Final answer
    x = 54,817.34

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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.